ASTROSAT CZTI

Data Quality Report

Orbit 56622

Creation date: 2026-03-17T00:12:42.904855
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_083T06_9000006558_56622cztM0_level2.fits modeM0/AS1A14_083T06_9000006558_56622cztM0_level2_quad_clean.evt
Size (bytes)405,273,60089,881,920
Size386.5 MB 85.7 MB
Events in quadrant A3,849,655584,166
Events in quadrant B3,329,416641,209
Events in quadrant C3,072,566565,597
Events in quadrant D4,274,490503,813

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
A0156771
B0141521
C0136441
D0171091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A61132594.236872%
B61141462.387962%
C6114450.736016%
D61144156.787700%

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 7228 6114 153 153 2.12% 2.50%
B 7229 6115 49 49 0.68% 0.80%
C 7229 6115 25 25 0.35% 0.41%
D 7229 6115 315 315 4.36% 5.15%

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 7 64 539641 3304.63 656 638 163.1
A 10 251 326941 2000.56 656 638 163.1
A 4 95 204725 1251.26 656 638 163.1
B 0 213 234312 1673.59 656 635 139.6
B 0 231 112015 797.7 656 635 139.6
B 4 21 109613 780.5 656 635 139.6
C 1 16 270728 1561.75 632 625 172.9
C 6 223 127288 732.37 632 625 172.9
C 9 38 35544 201.9 632 625 172.9
D 2 249 896351 5118.92 615 586 175.0
D 6 239 459560 2622.84 615 586 175.0
D 7 96 279702 1595.03 615 586 175.0

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