ASTROSAT CZTI

Data Quality Report

Orbit 20210703_C06_001T01_9000004508_level2

Creation date: 2025-12-27T09:39:17.879156
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/AS1C06_001T01_9000004508cztM0_level2.fits modeM0/AS1C06_001T01_9000004508cztM0_level2_quad_clean.evt
Size (bytes)253,278,720172,537,920
Size241.5 MB 164.5 MB
Events in quadrant A1,616,956963,122
Events in quadrant B1,514,826949,644
Events in quadrant C1,568,424899,349
Events in quadrant D1,368,798809,671

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04760
B04760
C04760
D04760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0506710
B0717180
C0523090
D0769190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A232693171.362328%
B232696512.797714%
C232697483.214577%
D2326911094.765998%

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 28889 23269 0 0 0.00% 0.00%
B 28889 23269 0 0 0.00% 0.00%
C 28889 23269 0 0 0.00% 0.00%
D 28889 23268 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 0 29 1545 11.11 421 398 103.2
A 7 110 1275 8.49 421 398 103.2
A 0 30 1219 7.95 421 398 103.2
B 2 9 1196 9.85 400 383 82.6
B 2 8 1032 7.86 400 383 82.6
B 5 128 1013 7.63 400 383 82.6
C 3 202 1197 7.66 414 391 105.2
C 3 203 1132 7.04 414 391 105.2
C 12 241 1102 6.76 414 391 105.2
D 4 246 1009 6.26 390 357 104.2
D 15 46 999 6.16 390 357 104.2
D 7 3 973 5.91 390 357 104.2

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