ASTROSAT CZTI

Data Quality Report

Orbit 56408

Creation date: 2026-03-02T17:24:12.489828
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_56408cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56408cztM0_level2_quad_clean.evt
Size (bytes)832,875,84076,020,480
Size794.3 MB 72.5 MB
Events in quadrant A9,941,574484,674
Events in quadrant B6,119,012582,575
Events in quadrant C4,790,620575,303
Events in quadrant D9,447,327181,960

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0342556
B0228611
C0192081
D0328961

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6840203229.707602%
B6840131619.239766%
C68416619.662330%
D6841477469.785119%

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 7375 6841 1772 1772 24.03% 25.90%
B 7375 6841 738 738 10.01% 10.79%
C 7376 6842 394 394 5.34% 5.76%
D 7375 6840 2036 2036 27.61% 29.77%

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 4 95 3971031 24238.48 661 646 163.8
A 12 3 2312894 14115.85 661 646 163.8
A 3 14 380133 2316.7 661 646 163.8
B 4 206 2766760 19009.11 682 658 145.5
B 0 213 128222 876.64 682 658 145.5
B 4 171 127721 873.2 682 658 145.5
C 5 250 860146 4468.06 703 698 192.4
C 12 254 353612 1834.71 703 698 192.4
C 6 223 315130 1634.65 703 698 192.4
D 8 129 7674634 94585.32 277 262 81.1
D 2 249 190685 2346.93 277 262 81.1
D 8 160 188244 2316.85 277 262 81.1

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