ASTROSAT CZTI

Data Quality Report

Orbit 20160203_T01_052T01_9000000312_level2

Creation date: 2025-10-27T13:02:19.003350
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T01_052T01_9000000312cztM0_level2.fits modeM0/AS1T01_052T01_9000000312cztM0_level2_quad_clean.evt
Size (bytes)884,810,880961,142,400
Size843.8 MB 916.6 MB
Events in quadrant A5,127,7525,719,645
Events in quadrant B5,143,7625,824,591
Events in quadrant C5,097,2625,534,987
Events in quadrant D4,357,4404,961,194

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020680
B020680
C020680
D020680

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139658439223336139655156596782
B1139658439223336139655156596782
C1139658439223336139655156596782
D1139658439223336139655156596782

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04706030
B04634380
C04364640
D04252620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10313810561.023871%
B1031408350.809579%
C1031404600.445996%
D10313610621.029708%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 115169 103140 0 0 0.00% 0.00%
B 115169 103142 0 0 0.00% 0.00%
C 115169 103142 0 0 0.00% 0.00%
D 115169 103111 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 29 4706 11.25 1325 1236 308.5
A 14 188 4693 11.21 1325 1236 308.5
A 7 110 4614 10.95 1325 1236 308.5
B 2 9 4068 10.89 1358 1282 255.8
B 5 128 3353 8.1 1358 1282 255.8
B 10 225 3351 8.09 1358 1282 255.8
C 12 241 3348 6.42 1343 1238 328.7
C 9 242 3321 6.34 1343 1238 328.7
C 1 81 3275 6.2 1343 1238 328.7
D 6 44 3097 6.64 1245 1137 295.2
D 1 19 3095 6.63 1245 1137 295.2
D 11 82 3090 6.62 1245 1137 295.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter