ASTROSAT CZTI

Data Quality Report

Orbit 58949

Creation date: 2026-08-20T13:28:25.639847
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_004T07_9000006598_58949cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58949cztM0_level2_quad_clean.evt
Size (bytes)669,346,56096,488,640
Size638.3 MB 92.0 MB
Events in quadrant A6,670,826611,894
Events in quadrant B6,835,463608,204
Events in quadrant C4,711,913636,625
Events in quadrant D6,039,410597,223

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0243722
B0247302
C0185982
D0225112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6706103615.448852%
B6706156323.307486%
C67073955.889369%
D67074426.590130%

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 9046 6706 854 854 9.44% 12.73%
B 9046 6706 1180 1180 13.04% 17.60%
C 9047 6707 270 270 2.98% 4.03%
D 9047 6708 363 363 4.01% 5.41%

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 14 238 2611185 14002.7 761 740 186.4
A 10 251 715293 3832.94 761 740 186.4
A 15 233 212704 1136.99 761 740 186.4
B 6 255 1589767 10288.74 724 696 154.4
B 2 249 1007557 6519.11 724 696 154.4
B 5 185 722342 4672.43 724 696 154.4
C 12 252 697713 3377.86 758 750 206.3
C 9 53 435313 2106.13 758 750 206.3
C 6 223 167845 809.83 758 750 206.3
D 11 129 2221356 10360.51 758 723 214.3
D 6 239 358136 1667.53 758 723 214.3
D 2 252 114629 531.44 758 723 214.3

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

TCT plots

Parameter TCT0 TCT_healed
Tct