ASTROSAT CZTI

Data Quality Report

Orbit 55024

Creation date: 2025-11-29T13:45:44.183389
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_025T01_9000006530_55024cztM0_level2.fits modeM0/AS1A14_025T01_9000006530_55024cztM0_level2_quad_clean.evt
Size (bytes)3,024,561,600243,397,440
Size2.8 GB 232.1 MB
Events in quadrant A34,489,2211,258,746
Events in quadrant B11,980,4012,299,298
Events in quadrant C12,120,0862,061,505
Events in quadrant D51,633,425200,965

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0118181108
B05221437
C05240025
D016894393

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04600
B04600
C04600
D04600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0500
B0500
C0500
D0500

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A22491936441.634432%
B224917763.450269%
C224944071.809371%
D224922049591.121288%

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 27427 22495 8850 8850 32.27% 39.34%
B 27427 22495 575 575 2.10% 2.56%
C 27428 22497 277 277 1.01% 1.23%
D 27428 22497 17326 17326 63.17% 77.01%

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 15 32 22015673 49110.97 1812 1768 448.2
A 12 115 2819086 6285.17 1812 1768 448.2
A 0 250 1741114 3880.32 1812 1768 448.2
B 0 183 1252925 2472.74 2357 2269 505.8
B 5 185 423857 833.54 2357 2269 505.8
B 10 245 351087 689.67 2357 2269 505.8
C 4 5 1097884 1673.12 2357 2331 654.8
C 1 16 841087 1280.94 2357 2331 654.8
C 6 223 372139 564.77 2357 2331 654.8
D 15 94 38901839 168863.62 801 762 230.4
D 11 129 6192355 26876.76 801 762 230.4
D 15 93 1063836 4614.64 801 762 230.4

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