ASTROSAT CZTI

Data Quality Report

Orbit 20220427_A11_065T21_9000005094_level2

Creation date: 2026-01-02T11:04:52.569657
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/AS1A11_065T21_9000005094cztM0_level2.fits modeM0/AS1A11_065T21_9000005094cztM0_level2_quad_clean.evt
Size (bytes)144,365,760150,857,280
Size137.7 MB 143.9 MB
Events in quadrant A867,586914,784
Events in quadrant B798,292874,031
Events in quadrant C858,468890,781
Events in quadrant D735,574777,485

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350940
B0469610
C0371690
D0448690

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0620
B0620
C0620
D0620

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03300
B03300
C03300
D03300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A161083602.234914%
B16108170010.553762%
C161083101.924510%
D161088785.450708%

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 22289 16095 0 0 0.00% 0.00%
B 22289 16100 0 0 0.00% 0.00%
C 22289 16101 0 0 0.00% 0.00%
D 22289 16098 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 7 110 760 9.42 226 214 58.0
A 9 19 753 9.3 226 214 58.0
A 0 29 714 8.62 226 214 58.0
B 2 9 671 10.89 211 202 43.1
B 3 80 641 10.2 211 202 43.1
B 2 8 591 9.03 211 202 43.1
C 3 187 583 6.09 227 213 60.7
C 2 31 559 5.7 227 213 60.7
C 12 241 555 5.63 227 213 60.7
D 10 113 566 6.6 209 191 56.8
D 6 62 554 6.39 209 191 56.8
D 7 3 543 6.19 209 191 56.8

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