ASTROSAT CZTI

Data Quality Report

Orbit 20220317_A10_123T09_9000005012_level2

Creation date: 2026-01-02T02:44:01.189023
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/AS1A10_123T09_9000005012cztM0_level2.fits modeM0/AS1A10_123T09_9000005012cztM0_level2_quad_clean.evt
Size (bytes)431,458,560463,867,200
Size411.5 MB 442.4 MB
Events in quadrant A2,635,7162,853,618
Events in quadrant B2,478,7262,818,943
Events in quadrant C2,590,4722,763,223
Events in quadrant D2,167,2962,419,329

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A09500
B09500
C09500
D09500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0952590
B01135450
C0977640
D01494380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01610
B01610
C01610
D01610

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A46530740.159037%
B4653018573.990974%
C465302410.517945%
D4653024125.183752%

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 62599 46530 0 0 0.00% 0.00%
B 62599 46510 0 0 0.00% 0.00%
C 62599 46527 0 0 0.00% 0.00%
D 62599 46492 0 0 0.00% 0.00%

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 7 110 2163 8.91 687 644 170.5
A 9 19 2118 8.65 687 644 170.5
A 14 95 2086 8.46 687 644 170.5
B 2 9 2166 11.9 654 625 129.5
B 3 80 1926 10.05 654 625 129.5
B 5 232 1703 8.33 654 625 129.5
C 1 81 2117 8.36 685 641 176.6
C 1 80 2090 8.2 685 641 176.6
C 3 187 1810 6.62 685 641 176.6
D 7 3 1678 6.7 620 564 166.3
D 10 189 1602 6.24 620 564 166.3
D 4 160 1569 6.04 620 564 166.3

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