ASTROSAT CZTI

Data Quality Report

Orbit 54115

Creation date: 2025-09-29T08:32:25.892141
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/AS1A14_012T01_9000006512_54115cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54115cztM0_level2_quad_clean.evt
Size (bytes)537,560,640109,831,680
Size512.7 MB 104.7 MB
Events in quadrant A4,335,360718,733
Events in quadrant B4,672,506748,805
Events in quadrant C5,323,226661,396
Events in quadrant D4,955,694648,743

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0188450
B0198760
C0219360
D0204720

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78752102.666667%
B78764645.891315%
C78766548.303707%
D78762463.123413%

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 7875 7875 163 163 2.07% 2.07%
B 7876 7876 159 159 2.02% 2.02%
C 7876 7876 597 597 7.58% 7.58%
D 7876 7876 233 233 2.96% 2.96%

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 8 498931 2466.08 807 787 202.0
A 13 248 204519 1008.58 807 787 202.0
A 15 174 143888 708.43 807 787 202.0
B 5 236 478329 2828.84 790 761 168.8
B 0 213 315695 1865.49 790 761 168.8
B 15 20 222418 1312.97 790 761 168.8
C 1 241 1532361 7243.94 771 765 211.4
C 13 3 454200 2144.59 771 765 211.4
C 15 147 178027 838.39 771 765 211.4
D 2 165 715885 3201.03 787 750 223.4
D 8 176 360809 1611.67 787 750 223.4
D 2 172 184692 823.35 787 750 223.4

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