ASTROSAT CZTI

Data Quality Report

Orbit 55708

Creation date: 2026-01-15T11:36:53.730751
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_099T04_9000006540_55708cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55708cztM0_level2_quad_clean.evt
Size (bytes)455,002,56094,947,840
Size433.9 MB 90.5 MB
Events in quadrant A6,414,355557,678
Events in quadrant B2,869,306682,533
Events in quadrant C3,204,996618,845
Events in quadrant D3,849,892563,649

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0233942
B0135122
C0144732
D0161822

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A648691814.153562%
B64851041.603701%
C6485711.094834%
D64851912.945258%

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 7630 6485 845 845 11.07% 13.03%
B 7630 6485 4 4 0.05% 0.06%
C 7630 6485 41 41 0.54% 0.63%
D 7630 6485 134 134 1.76% 2.07%

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 15 32 3545715 21258.54 676 658 166.8
A 8 249 66652 395.74 676 658 166.8
A 0 8 53285 315.59 676 658 166.8
B 0 199 34784 226.5 699 675 150.6
B 10 247 24092 155.5 699 675 150.6
B 12 111 18349 117.37 699 675 150.6
C 9 38 162516 862.51 686 680 187.6
C 14 96 135395 717.97 686 680 187.6
C 12 249 102352 541.87 686 680 187.6
D 11 129 944965 5007.06 675 645 188.6
D 8 245 132497 699.12 675 645 188.6
D 7 129 64823 340.29 675 645 188.6

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