ASTROSAT CZTI

Data Quality Report

Orbit 57169

Creation date: 2026-04-22T20:27:24.145102
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_070T08_9000006568_57169cztM0_level2.fits modeM0/AS1A14_070T08_9000006568_57169cztM0_level2_quad_clean.evt
Size (bytes)572,788,800128,882,880
Size546.3 MB 122.9 MB
Events in quadrant A3,880,534850,739
Events in quadrant B4,065,425915,697
Events in quadrant C6,884,051753,306
Events in quadrant D5,660,980746,994

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01840
B01840
C01840
D01840

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0187420
B0190160
C0269530
D0233380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A91571071.168505%
B91581831.998253%
C915892010.045862%
D91583824.171216%

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 9157 9157 4 4 0.04% 0.04%
B 9158 9158 12 12 0.13% 0.13%
C 9158 9158 518 518 5.66% 5.66%
D 9158 9158 338 338 3.69% 3.69%

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 13 248 34445 138.07 974 948 242.6
A 0 12 31510 125.98 974 948 242.6
A 10 251 18089 70.66 974 948 242.6
B 5 185 78562 377.05 960 922 205.9
B 4 201 32844 155.02 960 922 205.9
B 12 111 25623 119.96 960 922 205.9
C 15 224 1768306 7164.82 906 895 246.7
C 15 198 1171947 4747.27 906 895 246.7
C 14 67 143382 577.62 906 895 246.7
D 0 19 469384 1776.82 933 890 263.7
D 8 240 339052 1282.52 933 890 263.7
D 2 249 323093 1221.99 933 890 263.7

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