ASTROSAT CZTI

Data Quality Report

Orbit 56376

Creation date: 2026-02-28T11:28:33.607972
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_083T05_9000006554_56376cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56376cztM0_level2_quad_clean.evt
Size (bytes)609,595,20082,082,880
Size581.4 MB 78.3 MB
Events in quadrant A9,591,933370,243
Events in quadrant B3,318,932634,025
Events in quadrant C4,328,918549,469
Events in quadrant D4,857,971510,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0325971
B0139391
C0169891
D0187091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6025251141.676349%
B60241883.120850%
C60253225.344398%
D60253335.526971%

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 7219 6024 2532 2532 35.07% 42.03%
B 7218 6024 119 119 1.65% 1.98%
C 7219 6024 288 288 3.99% 4.78%
D 7219 6025 379 379 5.25% 6.29%

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 12 3 2895234 22394.34 521 510 129.3
A 7 64 2550839 19730.01 521 510 129.3
A 4 95 1325870 10253.33 521 510 129.3
B 0 213 228049 1665.69 646 625 136.5
B 1 255 84643 615.36 646 625 136.5
B 8 128 78099 567.43 646 625 136.5
C 15 230 676350 3959.04 629 623 170.7
C 12 254 536131 3137.51 629 623 170.7
C 13 3 325110 1901.15 629 623 170.7
D 8 129 1458444 8265.58 623 593 176.4
D 14 52 509616 2886.01 623 593 176.4
D 8 240 101527 572.27 623 593 176.4

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