ASTROSAT CZTI

Data Quality Report

Orbit 54107

Creation date: 2025-09-28T18:29:54.223148
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_012T01_9000006512_54107cztM0_level2.fits modeM0/AS1A14_012T01_9000006512_54107cztM0_level2_quad_clean.evt
Size (bytes)408,764,16091,189,440
Size389.8 MB 87.0 MB
Events in quadrant A3,039,165604,425
Events in quadrant B3,336,564652,071
Events in quadrant C3,248,078574,203
Events in quadrant D5,010,808486,037

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138206
B0142773
C0145774
D0194112

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63721271.993095%
B63741432.243489%
C63741732.714151%
D637567910.650980%

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 7360 6375 48 48 0.65% 0.75%
B 7361 6377 47 47 0.64% 0.74%
C 7361 6376 117 117 1.59% 1.84%
D 7361 6377 579 579 7.87% 9.08%

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 0 8 153363 920.66 669 651 165.9
A 13 248 63531 379.09 669 651 165.9
A 3 78 59468 354.59 669 651 165.9
B 4 81 162412 1150.86 659 638 140.6
B 5 185 114186 807.78 659 638 140.6
B 15 20 106649 754.16 659 638 140.6
C 1 241 283272 1603.77 643 635 176.2
C 13 3 238372 1348.99 643 635 176.2
C 9 38 41694 232.98 643 635 176.2
D 8 176 1965130 11255.37 621 593 174.5
D 2 165 234395 1339.52 621 593 174.5
D 15 78 107432 612.11 621 593 174.5

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