ASTROSAT CZTI

Data Quality Report

Orbit 57794

Creation date: 2026-06-03T22:02:55.450940
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_083T16_9000006580_57794cztM0_level2.fits modeM0/AS1A14_083T16_9000006580_57794cztM0_level2_quad_clean.evt
Size (bytes)1,794,162,240243,633,600
Size1.7 GB 232.3 MB
Events in quadrant A8,185,1051,746,808
Events in quadrant B15,252,2551,792,125
Events in quadrant C30,544,5651,001,571
Events in quadrant D10,988,3671,547,098

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0382022
B0584632
C01037032
D0458643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186903351.792402%
B1869112426.644909%
C18691806443.143759%
D186905903.156768%

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 19560 18690 3 3 0.02% 0.02%
B 19561 18691 640 640 3.27% 3.42%
C 19561 18691 7032 7032 35.95% 37.62%
D 19560 18690 373 373 1.91% 2.00%

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 3 128 265976 527.63 2023 1968 500.4
A 7 64 47345 90.69 2023 1968 500.4
A 3 245 35995 68.0 2023 1968 500.4
B 4 80 5944451 14221.23 1966 1887 417.9
B 10 247 395180 941.19 1966 1887 417.9
B 4 171 353327 841.04 1966 1887 417.9
C 9 38 16906051 39428.07 1586 1570 428.7
C 15 224 4288631 9999.16 1586 1570 428.7
C 15 208 2590366 6038.12 1586 1570 428.7
D 2 153 1078013 1980.01 1946 1859 543.5
D 12 0 599868 1100.27 1946 1859 543.5
D 3 12 452822 829.72 1946 1859 543.5

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