ASTROSAT CZTI

Data Quality Report

Orbit 59045

Creation date: 2026-08-28T01:44:01.771389
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_004T02_9000006600_59045cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59045cztM0_level2_quad_clean.evt
Size (bytes)1,486,926,720103,688,640
Size1.4 GB 98.9 MB
Events in quadrant A5,115,155950,013
Events in quadrant B6,541,982990,209
Events in quadrant C19,435,071460,351
Events in quadrant D23,187,62754,034

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0218072
B0261722
C0645302
D0755599

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A9861950.963391%
B98613093.133556%
C9861544955.258087%
D9861935794.888956%

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 11396 9863 40 40 0.35% 0.41%
B 11396 9863 136 136 1.19% 1.38%
C 11396 9863 5109 5109 44.83% 51.80%
D 11395 9861 7844 7844 68.84% 79.55%

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 3 14 359512 1359.54 1081 1057 263.7
A 14 238 292498 1105.37 1081 1057 263.7
A 8 206 61375 228.77 1081 1057 263.7
B 5 236 1557529 6895.72 1062 1023 225.7
B 4 171 313736 1385.4 1062 1023 225.7
B 4 21 103029 451.91 1062 1023 225.7
C 15 219 15121992 63749.63 850 839 237.2
C 9 38 398475 1676.4 850 839 237.2
C 4 5 224473 942.82 850 839 237.2
D 12 1 22016547 333316.94 227 216 66.1
D 2 252 49387 744.43 227 216 66.1
D 12 110 47782 720.13 227 216 66.1

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

TCT plots

Parameter TCT0 TCT_healed
Tct