ASTROSAT CZTI

Data Quality Report

Orbit 55644

Creation date: 2026-01-13T15:54:46.037754
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_021T06_9000006538_55644cztM0_level2.fits modeM0/AS1A14_021T06_9000006538_55644cztM0_level2_quad_clean.evt
Size (bytes)1,751,785,920345,404,160
Size1.6 GB 329.4 MB
Events in quadrant A19,690,3992,092,363
Events in quadrant B11,445,0452,467,784
Events in quadrant C11,519,9092,193,868
Events in quadrant D20,252,9871,980,396

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0170
C0170
D0170

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0765473
B0532643
C0539913
D0778883

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05080
B05080
C05080
D05080

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A25042262410.478396%
B250422881.150068%
C250422000.798658%
D2504317637.039891%

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 26782 25044 2415 2415 9.02% 9.64%
B 26783 25045 100 100 0.37% 0.40%
C 26783 25045 125 125 0.47% 0.50%
D 26783 25045 1886 1886 7.04% 7.53%

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 12 115 6585671 10677.74 2502 2442 616.5
A 8 249 1446090 2341.54 2502 2442 616.5
A 0 8 630185 1018.18 2502 2442 616.5
B 0 171 645361 1177.73 2557 2451 545.9
B 7 252 198095 358.39 2557 2451 545.9
B 9 254 122747 220.37 2557 2451 545.9
C 9 38 568470 824.91 2524 2496 686.1
C 13 3 413935 599.67 2524 2496 686.1
C 12 250 204794 294.85 2524 2496 686.1
D 11 129 4660622 6666.33 2469 2354 698.8
D 8 245 2959498 4231.89 2469 2354 698.8
D 3 12 555439 791.51 2469 2354 698.8

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