ASTROSAT CZTI

Data Quality Report

Orbit 55698

Creation date: 2026-01-20T13:41:44.074264
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_099T04_9000006540_55698cztM0_level2.fits modeM0/AS1A14_099T04_9000006540_55698cztM0_level2_quad_clean.evt
Size (bytes)488,975,040101,079,360
Size466.3 MB 96.4 MB
Events in quadrant A4,943,275636,006
Events in quadrant B3,007,392714,829
Events in quadrant C3,416,985637,028
Events in quadrant D6,169,547568,053

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0197440
B0147280
C0158340
D0234070

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01460
B01460
C01460
D01460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A72453805.244997%
B7245140.193237%
C7245640.883368%
D72455908.143547%

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 7245 7245 340 340 4.69% 4.69%
B 7245 7245 5 5 0.07% 0.07%
C 7245 7245 61 61 0.84% 0.84%
D 7244 7244 584 584 8.06% 8.06%

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 15 32 905028 4984.52 731 712 181.4
A 7 64 633620 3488.54 731 712 181.4
A 8 206 306081 1683.17 731 712 181.4
B 12 111 19675 118.08 735 707 160.6
B 4 206 18791 112.57 735 707 160.6
B 11 111 18270 109.33 735 707 160.6
C 13 3 155771 784.66 721 714 197.6
C 10 19 111542 560.84 721 714 197.6
C 15 147 68169 341.35 721 714 197.6
D 11 129 3038801 15055.77 705 673 201.8
D 7 129 136199 671.61 705 673 201.8
D 8 245 93667 460.84 705 673 201.8

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