ASTROSAT CZTI

Data Quality Report

Orbit 20220802_C07_015T04_9000005262_level2

Creation date: 2026-01-03T22:52:50.044535
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/AS1C07_015T04_9000005262cztM0_level2.fits modeM0/AS1C07_015T04_9000005262cztM0_level2_quad_clean.evt
Size (bytes)186,007,680158,132,160
Size177.4 MB 150.8 MB
Events in quadrant A1,180,186942,324
Events in quadrant B1,106,270939,714
Events in quadrant C1,145,202889,076
Events in quadrant D990,824805,693

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03600
B03600
C03600
D03600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0396150
B0457000
C0451500
D0545930

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17558490.279075%
B175655903.358952%
C175643902.220451%
D175598714.960419%

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 25937 17563 0 0 0.00% 0.00%
B 25937 17564 0 0 0.00% 0.00%
C 25937 17561 0 0 0.00% 0.00%
D 25937 17556 0 0 0.00% 0.00%

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 7 110 928 8.3 309 294 76.4
A 9 19 914 8.12 309 294 76.4
A 0 29 914 8.12 309 294 76.4
B 2 9 927 10.72 294 282 60.2
B 3 80 876 9.87 294 282 60.2
B 3 17 791 8.46 294 282 60.2
C 3 203 930 8.37 303 289 76.6
C 3 202 881 7.73 303 289 76.6
C 1 81 846 7.27 303 289 76.6
D 10 189 754 6.51 283 261 75.7
D 10 113 745 6.4 283 261 75.7
D 7 3 720 6.06 283 261 75.7

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