ASTROSAT CZTI

Data Quality Report

Orbit 20210115_A10_110T03_9000004114_level2

Creation date: 2025-12-19T19:25:33.240218
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/AS1A10_110T03_9000004114cztM0_level2.fits modeM0/AS1A10_110T03_9000004114cztM0_level2_quad_clean.evt
Size (bytes)756,069,120568,635,840
Size721.0 MB 542.3 MB
Events in quadrant A4,776,0443,202,280
Events in quadrant B4,507,7343,194,657
Events in quadrant C4,611,6023,044,527
Events in quadrant D3,891,3622,669,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01190
B01190
C01190
D01190

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01562310
B01722910
C01630430
D02617550

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015160
B015160
C015160
D015160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A744938601.154471%
B7449321462.880808%
C7449322703.047266%
D74493770510.343254%

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 86257 74479 0 0 0.00% 0.00%
B 86258 74473 0 0 0.00% 0.00%
C 86257 74470 0 0 0.00% 0.00%
D 86257 74376 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 4578 11.16 1245 1173 305.1
A 7 110 3746 8.43 1245 1173 305.1
A 0 30 3558 7.82 1245 1173 305.1
B 2 9 3725 11.07 1191 1137 233.8
B 2 8 3051 8.19 1191 1137 233.8
B 5 255 2986 7.91 1191 1137 233.8
C 1 80 3523 7.83 1219 1146 303.5
C 1 81 3471 7.66 1219 1146 303.5
C 3 126 3114 6.48 1219 1146 303.5
D 15 46 2914 6.51 1114 1020 291.1
D 6 67 2684 5.72 1114 1020 291.1
D 6 231 2646 5.59 1114 1020 291.1

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