ASTROSAT CZTI

Data Quality Report

Orbit 54677

Creation date: 2025-11-06T03:38:17.018111
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_066T07_9000006522_54677cztM0_level2.fits modeM0/AS1A14_066T07_9000006522_54677cztM0_level2_quad_clean.evt
Size (bytes)438,333,12088,528,320
Size418.0 MB 84.4 MB
Events in quadrant A2,929,318598,375
Events in quadrant B3,080,344636,455
Events in quadrant C3,453,660563,153
Events in quadrant D6,297,878465,484

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0130031
B0132721
C0142351
D0229121

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5970921.541039%
B5970981.641541%
C59701472.462312%
D5970104817.554439%

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 7105 5970 16 16 0.23% 0.27%
B 7105 5970 4 4 0.06% 0.07%
C 7105 5970 81 81 1.14% 1.36%
D 7105 5970 931 931 13.10% 15.59%

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 11 3 113081 679.64 671 654 165.4
A 0 8 63840 381.97 671 654 165.4
A 13 248 57402 343.05 671 654 165.4
B 7 0 172183 1205.29 665 642 142.3
B 0 213 84604 589.94 665 642 142.3
B 2 249 66939 465.82 665 642 142.3
C 9 38 442373 2443.7 653 646 180.8
C 15 157 209293 1154.27 653 646 180.8
C 4 5 74589 409.06 653 646 180.8
D 11 129 3085384 17693.4 608 581 174.3
D 2 62 249608 1428.34 608 581 174.3
D 2 172 182843 1045.39 608 581 174.3

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