ASTROSAT CZTI

Data Quality Report

Orbit 58905

Creation date: 2026-08-17T14:17:59.289603
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_58905cztM0_level2.fits modeM0/AS1A14_004T07_9000006598_58905cztM0_level2_quad_clean.evt
Size (bytes)669,908,16090,296,640
Size638.9 MB 86.1 MB
Events in quadrant A7,123,324581,090
Events in quadrant B3,543,412694,324
Events in quadrant C3,253,467625,956
Events in quadrant D10,390,916394,450

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255311
B0145612
C0139811
D0353251

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284103316.438574%
B62842644.201146%
C62841121.782304%
D6284235137.412476%

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 7464 6285 699 699 9.36% 11.12%
B 7464 6285 93 93 1.25% 1.48%
C 7464 6285 51 51 0.68% 0.81%
D 7464 6285 2109 2109 28.26% 33.56%

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 3618385 20874.8 706 688 173.3
A 15 233 592114 3412.64 706 688 173.3
A 3 254 96189 551.06 706 688 173.3
B 4 236 152935 985.89 726 700 154.4
B 5 172 137650 886.9 726 700 154.4
B 4 171 103249 664.12 726 700 154.4
C 12 252 221772 1130.02 712 704 195.6
C 12 249 81959 415.34 712 704 195.6
C 6 223 70491 356.72 712 704 195.6
D 12 110 7412329 41431.85 625 598 178.9
D 11 129 295377 1647.83 625 598 178.9
D 2 249 40572 223.46 625 598 178.9

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