ASTROSAT CZTI

Data Quality Report

Orbit 54532

Creation date: 2025-10-27T10:09:30.110743
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_127T09_9000006520_54532cztM0_level2.fits modeM0/AS1A14_127T09_9000006520_54532cztM0_level2_quad_clean.evt
Size (bytes)530,038,08098,642,880
Size505.5 MB 94.1 MB
Events in quadrant A3,498,937670,074
Events in quadrant B4,091,554699,567
Events in quadrant C7,813,296538,251
Events in quadrant D3,680,041598,028

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0154212
B0170792
C0281792
D0159642

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01400
B01400
C01400
D01400

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0170
D0170

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A69031181.709402%
B69033184.606693%
C6903143120.730117%
D69031041.506591%

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 7978 6904 88 88 1.10% 1.27%
B 7978 6904 204 204 2.56% 2.95%
C 7978 6904 1293 1293 16.21% 18.73%
D 7978 6904 100 100 1.25% 1.45%

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 4 249 467771 2532.38 745 729 184.4
A 3 110 36835 195.77 745 729 184.4
A 4 3 28591 151.07 745 729 184.4
B 5 185 619622 3890.2 739 713 159.1
B 1 207 201410 1261.5 739 713 159.1
B 10 14 170226 1065.49 739 713 159.1
C 4 5 4373150 23818.88 666 659 183.6
C 12 252 440218 2394.47 666 659 183.6
C 1 16 79829 431.27 666 659 183.6
D 2 172 315879 1527.07 719 685 206.4
D 3 224 192563 929.62 719 685 206.4
D 6 239 177645 857.35 719 685 206.4

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