ASTROSAT CZTI

Data Quality Report

Orbit 52219

Creation date: 2025-06-20T17:28:41.065882
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_011T08_9000006472_52219cztM0_level2.fits modeM0/AS1C09_011T08_9000006472_52219cztM0_level2_quad_clean.evt
Size (bytes)805,959,36068,385,600
Size768.6 MB 65.2 MB
Events in quadrant A3,212,391555,476
Events in quadrant B5,158,970575,550
Events in quadrant C6,873,551460,349
Events in quadrant D14,133,72068,228

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0136161
B0194643
C0244961
D0460061

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5876841.429544%
B58763836.518039%
C5876108718.498979%
D5876521688.767869%

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 6906 5877 32 32 0.46% 0.54%
B 6906 5876 260 260 3.76% 4.42%
C 6906 5877 931 931 13.48% 15.84%
D 6906 5876 4950 4950 71.68% 84.24%

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 12 3 296433 1931.61 618 604 153.2
A 11 3 137286 892.46 618 604 153.2
A 3 145 68621 444.12 618 604 153.2
B 10 254 1380606 10766.58 598 578 128.2
B 5 32 726073 5660.1 598 578 128.2
B 4 171 173084 1345.84 598 578 128.2
C 15 224 1766828 11358.32 555 551 155.5
C 15 231 1495619 9614.27 555 551 155.5
C 15 192 515390 3310.75 555 551 155.5
D 6 42 8820915 110106.36 272 259 80.1
D 11 176 1986437 24793.04 272 259 80.1
D 15 93 1554069 19395.88 272 259 80.1

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