ASTROSAT CZTI

Data Quality Report

Orbit 56333

Creation date: 2026-02-25T14:34:43.190724
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_049T01_9000006552_56333cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56333cztM0_level2_quad_clean.evt
Size (bytes)844,894,08069,828,480
Size805.8 MB 66.6 MB
Events in quadrant A8,439,280453,217
Events in quadrant B3,671,090643,138
Events in quadrant C3,773,054568,202
Events in quadrant D14,917,15522,498

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0293161
B0150051
C0155791
D0484791

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6118176228.800262%
B61192103.431933%
C61192403.922210%
D6119593797.025658%

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 7243 6119 1492 1492 20.60% 24.38%
B 7244 6120 66 66 0.91% 1.08%
C 7244 6120 144 144 1.99% 2.35%
D 7244 6119 5264 5264 72.67% 86.03%

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 4 95 3942145 25455.01 622 606 154.8
A 7 64 789597 5095.41 622 606 154.8
A 4 249 356296 2297.1 622 606 154.8
B 3 145 341496 2394.7 668 644 142.3
B 5 185 247440 1733.9 668 644 142.3
B 0 231 105406 736.02 668 644 142.3
C 5 250 461853 2599.82 655 648 177.4
C 12 252 224948 1264.38 655 648 177.4
C 5 233 148812 835.2 655 648 177.4
D 8 129 13205518 201554.5 222 211 65.5
D 12 3 343387 5237.94 222 211 65.5
D 2 249 309694 4723.68 222 211 65.5

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