ASTROSAT CZTI

Data Quality Report

Orbit 54794

Creation date: 2025-11-14T01:33:47.713651
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_103T01_9000006524_54794cztM0_level2.fits modeM0/AS1A14_103T01_9000006524_54794cztM0_level2_quad_clean.evt
Size (bytes)464,310,72093,810,240
Size442.8 MB 89.5 MB
Events in quadrant A2,835,571618,205
Events in quadrant B3,761,160660,219
Events in quadrant C5,895,132554,521
Events in quadrant D4,180,900545,981

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137363
B0160982
C0221532
D0172832

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6622831.253398%
B66231872.823494%
C66235718.621471%
D66232964.469274%

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 7613 6624 5 5 0.07% 0.08%
B 7613 6623 78 78 1.02% 1.18%
C 7613 6624 498 498 6.54% 7.52%
D 7613 6624 242 242 3.18% 3.65%

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 14 52500 299.68 697 677 172.9
A 11 3 19342 107.93 697 677 172.9
A 13 254 17493 97.24 697 677 172.9
B 2 249 843723 5707.61 685 660 147.7
B 6 255 89725 602.98 685 660 147.7
B 5 185 49151 328.29 685 660 147.7
C 9 38 2410664 13256.51 658 652 181.8
C 13 3 396356 2176.61 658 652 181.8
C 6 223 201093 1102.55 658 652 181.8
D 3 12 477819 2525.61 664 634 188.9
D 15 94 461836 2441.01 664 634 188.9
D 14 52 157239 828.87 664 634 188.9

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