ASTROSAT CZTI

Data Quality Report

Orbit 20210408_A10_102T12_9000004284_level2

Creation date: 2025-12-23T20:35:02.733719
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_102T12_9000004284cztM0_level2.fits modeM0/AS1A10_102T12_9000004284cztM0_level2_quad_clean.evt
Size (bytes)811,448,640521,461,440
Size773.9 MB 497.3 MB
Events in quadrant A5,157,3602,795,501
Events in quadrant B4,853,3942,773,494
Events in quadrant C4,916,9602,605,910
Events in quadrant D4,349,9122,319,103

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1140261552437288140260746985518
B1140261552437288140260746985518
C1140261552437288140260746985518
D1140261552437288140260746985518

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01686780
B02363290
C02268180
D02218850

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015700
B015700
C015700
D015700

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7723013641.766153%
B7723018472.391558%
C7723044745.793086%
D7722948446.272255%

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 82518 71819 0 0 0.00% 0.00%
B 82518 71818 0 0 0.00% 0.00%
C 82518 71818 0 0 0.00% 0.00%
D 82518 71777 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 4119 8.88 1344 1265 321.2
A 7 110 3904 8.22 1344 1265 321.2
A 9 19 3783 7.84 1344 1265 321.2
B 2 9 3803 10.07 1282 1227 255.8
B 5 232 3258 7.94 1282 1227 255.8
B 3 80 3184 7.65 1282 1227 255.8
C 1 81 3747 7.74 1297 1218 326.9
C 1 80 3741 7.72 1297 1218 326.9
C 3 202 3714 7.64 1297 1218 326.9
D 15 46 3126 6.09 1244 1139 326.5
D 10 189 3059 5.88 1244 1139 326.5
D 6 67 2989 5.67 1244 1139 326.5

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