ASTROSAT CZTI

Data Quality Report

Orbit 55412

Creation date: 2025-12-25T15:58:40.856145
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_55412cztM0_level2.fits modeM0/AS1A14_099T01_9000006536_55412cztM0_level2_quad_clean.evt
Size (bytes)608,267,52086,313,600
Size580.1 MB 82.3 MB
Events in quadrant A3,291,042621,520
Events in quadrant B3,210,896673,326
Events in quadrant C3,376,943589,002
Events in quadrant D12,103,014251,861

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150161
B0146211
C0155051
D0406853

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68591582.303543%
B68601121.632653%
C68602153.134111%
D6859401658.550809%

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 7694 6860 75 75 0.97% 1.09%
B 7695 6861 27 27 0.35% 0.39%
C 7695 6861 139 139 1.81% 2.03%
D 7694 6859 3551 3551 46.15% 51.77%

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 357035 2019.41 712 694 176.5
A 4 159 68765 385.76 712 694 176.5
A 12 3 41599 231.81 712 694 176.5
B 5 185 181852 1192.15 706 680 152.0
B 5 236 100012 653.63 706 680 152.0
B 2 30 25717 164.75 706 680 152.0
C 9 38 473014 2535.0 684 677 186.3
C 13 3 67578 359.05 684 677 186.3
C 12 252 46475 245.8 684 677 186.3
D 11 129 9839530 79367.98 437 417 124.0
D 11 176 200224 1611.76 437 417 124.0
D 2 249 148634 1195.6 437 417 124.0

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