ASTROSAT CZTI

Data Quality Report

Orbit 52303

Creation date: 2025-07-22T14:55:49.123824
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/AS1C09_011T05_9000006474_52303cztM0_level2.fits modeM0/AS1C09_011T05_9000006474_52303cztM0_level2_quad_clean.evt
Size (bytes)2,037,067,200172,598,400
Size1.9 GB 164.6 MB
Events in quadrant A12,087,4591,270,377
Events in quadrant B14,085,4211,336,109
Events in quadrant C27,237,011621,311
Events in quadrant D20,833,838955,276

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466053
B0524053
C0913133
D0724673

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03060
B03060
C03060
D03060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0180
B0180
C0180
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A15094161810.719491%
B15093203113.456569%
C15094856456.737777%
D15094414927.487743%

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 16859 15096 1411 1411 8.37% 9.35%
B 16858 15095 1344 1344 7.97% 8.90%
C 16858 15093 7614 7614 45.17% 50.45%
D 16859 15097 4034 4034 23.93% 26.72%

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 4 249 3233945 8657.17 1497 1460 373.4
A 12 3 970000 2593.92 1497 1460 373.4
A 15 174 568068 1517.48 1497 1460 373.4
B 12 32 2919622 9154.5 1504 1451 318.8
B 10 254 1671228 5238.2 1504 1451 318.8
B 4 171 1194556 3742.85 1504 1451 318.8
C 15 224 7635037 27857.82 991 981 274.0
C 0 161 5578714 20353.99 991 981 274.0
C 15 178 4528935 16523.18 991 981 274.0
D 6 42 6138483 15596.28 1363 1298 393.5
D 15 78 3268139 8301.94 1363 1298 393.5
D 8 176 2526493 6417.22 1363 1298 393.5

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