ASTROSAT CZTI

Data Quality Report

Orbit 55397

Creation date: 2025-12-24T16:21:08.927979
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_099T01_9000006536_55397cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55397cztM0_level2_quad_clean.evt
Size (bytes)800,856,000133,565,760
Size763.8 MB 127.4 MB
Events in quadrant A5,858,244891,833
Events in quadrant B4,201,836977,671
Events in quadrant C7,343,856839,846
Events in quadrant D11,488,179660,657

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02000
B02000
C02000
D02000

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0246212
B0199542
C0290552
D0408269

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97145415.569281%
B97151531.574884%
C97156276.453937%
D9714214022.030060%

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 10998 9714 366 366 3.33% 3.77%
B 10999 9715 7 7 0.06% 0.07%
C 10999 9715 664 664 6.04% 6.83%
D 10999 9714 2160 2160 19.64% 22.24%

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 4 159 1317134 5221.62 1021 994 252.1
A 0 8 342142 1353.46 1021 994 252.1
A 6 162 104281 409.78 1021 994 252.1
B 0 199 39505 176.39 1019 979 218.4
B 10 247 37749 168.35 1019 979 218.4
B 5 185 30954 137.24 1019 979 218.4
C 9 38 3280521 12084.81 990 981 271.4
C 12 249 79085 287.81 990 981 271.4
C 1 241 40370 145.14 990 981 271.4
D 11 129 6110374 23725.43 898 857 257.5
D 2 249 613833 2380.4 898 857 257.5
D 8 160 610381 2367.0 898 857 257.5

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