ASTROSAT CZTI

Data Quality Report

Orbit 20210521_A10_053T14_9000004390_level2

Creation date: 2025-12-25T23:20:24.733236
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/AS1A10_053T14_9000004390cztM0_level2.fits modeM0/AS1A10_053T14_9000004390cztM0_level2_quad_clean.evt
Size (bytes)292,199,040123,661,440
Size278.7 MB 117.9 MB
Events in quadrant A1,891,122503,550
Events in quadrant B1,753,692484,986
Events in quadrant C1,738,116461,511
Events in quadrant D1,613,958439,898

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0599270
B0860660
C0692840
D0660180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05480
B05480
C05480
D05480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A269356262.324114%
B2693510013.716354%
C2693513805.123445%
D269354791.778355%

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 32885 26888 0 0 0.00% 0.00%
B 32885 26935 0 0 0.00% 0.00%
C 32885 26933 0 0 0.00% 0.00%
D 32885 26935 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 1785 11.11 494 468 118.5
A 7 110 1421 8.04 494 468 118.5
A 0 30 1413 7.97 494 468 118.5
B 2 9 1329 9.48 464 446 93.1
B 5 128 1162 7.68 464 446 93.1
B 14 254 1152 7.58 464 446 93.1
C 1 80 1334 7.72 459 431 117.0
C 1 81 1323 7.62 459 431 117.0
C 9 209 1212 6.68 459 431 117.0
D 15 46 1218 6.53 460 423 121.7
D 6 231 1158 6.04 460 423 121.7
D 12 6 1149 5.97 460 423 121.7

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