ASTROSAT CZTI

Data Quality Report

Orbit 57943

Creation date: 2026-06-13T21:11:09.820745
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_031T01_9000006584_57943cztM0_level2.fits modeM0/AS1A14_031T01_9000006584_57943cztM0_level2_quad_clean.evt
Size (bytes)415,748,16097,202,880
Size396.5 MB 92.7 MB
Events in quadrant A2,977,598652,868
Events in quadrant B3,401,561693,608
Events in quadrant C4,734,922557,476
Events in quadrant D3,760,312577,952

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135971
B0148081
C0187231
D0156582

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6618540.815956%
B66191251.888503%
C661975711.436773%
D66181352.039891%

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 7633 6619 2 2 0.03% 0.03%
B 7634 6620 38 38 0.50% 0.57%
C 7633 6619 376 376 4.93% 5.68%
D 7633 6619 107 107 1.40% 1.62%

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 30249 161.11 742 723 183.3
A 3 14 24915 132.01 742 723 183.3
A 13 254 12901 66.45 742 723 183.3
B 4 201 71521 454.6 725 700 155.8
B 0 153 61560 390.66 725 700 155.8
B 10 247 59097 374.85 725 700 155.8
C 1 12 1187954 6572.17 660 654 180.7
C 15 224 562166 3108.19 660 654 180.7
C 14 254 227339 1254.79 660 654 180.7
D 3 176 331094 1655.7 713 683 199.6
D 2 249 244407 1221.31 713 683 199.6
D 8 240 109791 546.74 713 683 199.6

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