ASTROSAT CZTI

Data Quality Report

Orbit 53727

Creation date: 2025-09-03T05:48:08.635439
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_022T04_9000006506_53727cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53727cztM0_level2_quad_clean.evt
Size (bytes)1,125,895,68078,552,000
Size1.0 GB 74.9 MB
Events in quadrant A18,056,603122,013
Events in quadrant B3,739,784751,479
Events in quadrant C12,826,186380,916
Events in quadrant D6,478,850604,386

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0587972
B0167172
C0432752
D0244562

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01560
B01560
C01560
D01560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7451645286.592404%
B74521411.892110%
C7451369349.563817%
D74516268.401557%

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 9026 7453 6278 6278 69.55% 84.23%
B 9027 7454 66 66 0.73% 0.89%
C 9026 7453 2977 2977 32.98% 39.94%
D 9026 7453 494 494 5.47% 6.63%

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 63 15484622 145277.11 415 405 106.6
A 3 78 716563 6719.19 415 405 106.6
A 15 174 90416 844.51 415 405 106.6
B 0 213 279893 1671.79 774 745 167.0
B 4 81 168666 1005.66 774 745 167.0
B 2 136 31511 184.25 774 745 167.0
C 15 224 6682964 41625.61 577 573 160.5
C 1 241 2692596 16769.01 577 573 160.5
C 15 147 753257 4688.58 577 573 160.5
D 1 241 1362421 6379.6 741 708 213.4
D 2 172 551449 2580.21 741 708 213.4
D 10 118 366079 1711.76 741 708 213.4

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