ASTROSAT CZTI

Data Quality Report

Orbit 50625

Creation date: 2025-02-06T07:05:22.676969
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/AS1T05_239T01_9000006444_50625cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50625cztM0_level2_quad_clean.evt
Size (bytes)614,033,28091,327,680
Size585.6 MB 87.1 MB
Events in quadrant A3,810,883629,852
Events in quadrant B10,330,226466,341
Events in quadrant C3,786,743628,485
Events in quadrant D4,285,123576,851

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158222
B0352332
C0160272
D0176212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66521922.886350%
B6652266640.078172%
C66521522.285027%
D66522794.194227%

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 7802 6652 107 107 1.37% 1.61%
B 7801 6651 2253 2253 28.88% 33.87%
C 7802 6653 139 139 1.78% 2.09%
D 7802 6652 211 211 2.70% 3.17%

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 3 195771 1114.0 709 689 175.1
A 8 38 194652 1107.61 709 689 175.1
A 8 247 84212 476.95 709 689 175.1
B 4 170 4762678 35960.47 624 603 132.4
B 7 0 1116369 8425.63 624 603 132.4
B 5 172 909146 6860.8 624 603 132.4
C 13 3 250987 1299.22 697 693 192.6
C 10 69 173381 896.39 697 693 192.6
C 0 224 109239 563.44 697 693 192.6
D 11 245 236271 1242.68 680 654 189.6
D 2 249 233500 1228.07 680 654 189.6
D 1 47 168519 885.35 680 654 189.6

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