ASTROSAT CZTI

Data Quality Report

Orbit 56370

Creation date: 2026-02-28T02:47:23.485862
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_56370cztM0_level2.fits modeM0/AS1A14_083T05_9000006554_56370cztM0_level2_quad_clean.evt
Size (bytes)2,832,143,040165,657,600
Size2.6 GB 158.0 MB
Events in quadrant A37,278,379595,006
Events in quadrant B16,830,2621,492,662
Events in quadrant C14,455,5161,458,079
Events in quadrant D34,875,985218,989

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03660
B03660
C03660
D03660

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01226443
B0623883
C0559103
D01159813

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A181281226267.641218%
B18128320417.674316%
C1812815708.660635%
D181281569886.595322%

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 19357 18128 11988 11988 61.93% 66.13%
B 19358 18129 2253 2253 11.64% 12.43%
C 19358 18130 1504 1504 7.77% 8.30%
D 19357 18128 9850 9850 50.89% 54.34%

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 3 26757691 91883.99 1161 1133 291.2
A 12 194 3184429 10931.67 1161 1133 291.2
A 3 79 813999 2791.44 1161 1133 291.2
B 4 206 7282461 19839.48 1734 1671 367.0
B 4 21 779486 2119.47 1734 1671 367.0
B 5 185 435168 1181.24 1734 1671 367.0
C 12 254 2865050 5819.02 1790 1769 492.1
C 15 230 2383399 4840.17 1790 1769 492.1
C 12 252 1188766 2412.32 1790 1769 492.1
D 8 129 31739672 200125.11 546 519 158.6
D 2 249 231051 1453.58 546 519 158.6
D 8 240 225814 1420.55 546 519 158.6

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