ASTROSAT CZTI

Data Quality Report

Orbit 54824

Creation date: 2025-11-17T10:42:27.957916
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_039T06_9000006526_54824cztM0_level2.fits modeM0/AS1A14_039T06_9000006526_54824cztM0_level2_quad_clean.evt
Size (bytes)604,681,92095,820,480
Size576.7 MB 91.4 MB
Events in quadrant A3,062,147661,943
Events in quadrant B3,736,564697,416
Events in quadrant C4,331,391610,598
Events in quadrant D10,709,955443,812

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145232
B0162642
C0179362
D0366982

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7005971.384725%
B70052213.154889%
C70052894.125625%
D7005204129.136331%

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 7675 7006 4 4 0.05% 0.06%
B 7675 7006 48 48 0.63% 0.69%
C 7675 7006 166 166 2.16% 2.37%
D 7675 7006 2097 2097 27.32% 29.93%

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 8 20961 107.22 764 745 188.6
A 4 3 16882 85.58 764 745 188.6
A 13 254 16696 84.6 764 745 188.6
B 5 185 359681 2200.92 749 719 163.1
B 10 247 190114 1161.25 749 719 163.1
B 2 249 147936 902.64 749 719 163.1
C 4 5 608269 3034.46 734 729 200.2
C 12 252 298416 1486.85 734 729 200.2
C 13 3 190831 949.5 734 729 200.2
D 2 172 4992851 26228.18 674 645 190.3
D 3 12 1522020 7993.04 674 645 190.3
D 1 31 707693 3714.71 674 645 190.3

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