ASTROSAT CZTI

Data Quality Report

Orbit 53631

Creation date: 2025-08-28T14:43:28.606442
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_022T05_9000006504_53631cztM0_level2.fits modeM0/AS1A14_022T05_9000006504_53631cztM0_level2_quad_clean.evt
Size (bytes)837,123,84082,900,800
Size798.3 MB 79.1 MB
Events in quadrant A8,327,853475,970
Events in quadrant B6,914,245591,012
Events in quadrant C9,546,037417,630
Events in quadrant D5,697,421572,923

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0291782
B0250042
C0326473
D0213412

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6486212632.778292%
B6486136621.060746%
C6485248838.365459%
D64855378.280648%

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 7606 6492 1805 1805 23.73% 27.80%
B 7606 6492 990 990 13.02% 15.25%
C 7605 6491 2264 2264 29.77% 34.88%
D 7605 6491 441 441 5.80% 6.79%

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 3 78 2185313 13472.35 653 638 162.2
A 4 95 2116087 13045.45 653 638 162.2
A 15 174 941288 5800.76 653 638 162.2
B 15 20 2115626 14651.34 675 654 144.4
B 4 206 1164307 8061.14 675 654 144.4
B 7 0 291206 2012.78 675 654 144.4
C 1 241 4766772 30551.84 559 556 156.0
C 15 224 1936681 12410.72 559 556 156.0
C 13 3 188631 1205.58 559 556 156.0
D 8 176 1486196 7359.65 713 683 201.8
D 2 153 236040 1166.03 713 683 201.8
D 3 12 230246 1137.32 713 683 201.8

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