ASTROSAT CZTI

Data Quality Report

Orbit 56523

Creation date: 2026-03-10T08:37:08.944724
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_060T01_9000006556_56523cztM0_level2.fits modeM0/AS1A14_060T01_9000006556_56523cztM0_level2_quad_clean.evt
Size (bytes)559,869,12098,596,800
Size533.9 MB 94.0 MB
Events in quadrant A6,058,728645,488
Events in quadrant B4,716,950687,630
Events in quadrant C5,377,938582,293
Events in quadrant D4,036,824589,986

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229602
B0187642
C0207012
D0168484

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0160
D0160

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68863194.632588%
B68864987.232065%
C688670210.194598%
D68851141.655773%

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 7906 6886 117 117 1.48% 1.70%
B 7906 6886 200 200 2.53% 2.90%
C 7905 6885 700 700 8.86% 10.17%
D 7905 6885 58 58 0.73% 0.84%

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 0 12 1947220 10575.27 749 732 184.1
A 7 64 880333 4778.87 749 732 184.1
A 4 95 230326 1247.38 749 732 184.1
B 4 206 1141568 7136.67 747 719 159.9
B 4 171 259799 1620.7 747 719 159.9
B 5 185 124270 772.88 747 719 159.9
C 15 230 1834879 9509.64 699 693 192.9
C 13 3 419815 2173.01 699 693 192.9
C 12 252 169598 875.72 699 693 192.9
D 2 249 458164 2194.84 735 702 208.4
D 9 49 245997 1176.89 735 702 208.4
D 8 240 115880 552.61 735 702 208.4

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