ASTROSAT CZTI

Data Quality Report

Orbit 21996

Creation date: 2024-06-27T18:35:03.850422
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/AS1A07_094T01_9000003248_21996cztM0_level2.evt modeM0/AS1A07_094T01_9000003248_21996cztM0_level2_quad_clean.evt
Size (bytes)338,411,52033,465,600
Size322.7 MB 31.9 MB
Events in quadrant A1,749,213192,583
Events in quadrant B1,905,780194,781
Events in quadrant C1,727,968184,454
Events in quadrant D4,607,287173,012

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0760
B0760
C0760
D0760

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A076030
B080540
C075950
D0163690

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A378960.158353%
B3790210.554090%
C379060.158311%
D379069318.284960%

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 3789 3789 0 0 0.00% 0.00%
B 3790 3790 12 12 0.32% 0.32%
C 3790 3790 0 0 0.00% 0.00%
D 3790 3790 718 718 18.94% 18.94%

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 15 236 10637 110.86 450 440 92.0
A 13 254 6252 63.19 450 440 92.0
A 0 226 4001 38.71 450 440 92.0
B 3 64 68277 766.71 447 437 88.5
B 0 230 54449 610.43 447 437 88.5
B 0 197 21073 233.22 447 437 88.5
C 14 238 67031 657.11 426 428 101.4
C 13 61 2992 25.3 426 428 101.4
C 4 175 1316 8.76 426 428 101.4
D 7 238 2866476 28082.59 412 399 102.1
D 1 52 130678 1276.51 412 399 102.1
D 13 172 21206 203.87 412 399 102.1

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