ASTROSAT CZTI

Data Quality Report

Orbit 54631

Creation date: 2025-11-03T02:07:01.227690
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/AS1A14_066T07_9000006522_54631cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54631cztM0_level2_quad_clean.evt
Size (bytes)395,447,04094,371,840
Size377.1 MB 90.0 MB
Events in quadrant A3,358,908629,224
Events in quadrant B3,362,555662,171
Events in quadrant C4,139,028566,308
Events in quadrant D3,294,722567,456

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142031
B0143111
C0166761
D0141981

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A62031412.273094%
B62021913.079652%
C62024667.513705%
D6203891.434790%

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 7348 6204 68 68 0.93% 1.10%
B 7347 6203 39 39 0.53% 0.63%
C 7347 6203 376 376 5.12% 6.06%
D 7348 6204 31 31 0.42% 0.50%

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 1 241 232847 1331.43 708 691 174.4
A 11 3 156950 896.16 708 691 174.4
A 3 62 47705 269.63 708 691 174.4
B 5 172 432452 2886.74 695 671 149.6
B 1 207 44833 295.25 695 671 149.6
B 10 247 43479 286.2 695 671 149.6
C 4 5 1154757 6238.66 674 672 185.0
C 6 223 106159 570.23 674 672 185.0
C 13 3 50269 268.11 674 672 185.0
D 8 240 162167 817.08 695 664 197.7
D 8 160 116148 584.26 695 664 197.7
D 15 94 80103 401.9 695 664 197.7

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