ASTROSAT CZTI

Data Quality Report

Orbit 53262

Creation date: 2025-08-02T22:21:30.516239
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/AS1C09_011T08_9000006492_53262cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53262cztM0_level2_quad_clean.evt
Size (bytes)562,852,80090,800,640
Size536.8 MB 86.6 MB
Events in quadrant A6,107,183582,090
Events in quadrant B3,899,710645,498
Events in quadrant C6,612,446512,287
Events in quadrant D3,708,164553,168

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227262
B0161981
C0242051
D0156301

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65406059.250765%
B65403004.587156%
C6541103015.746828%
D65411512.308516%

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 7370 6540 511 511 6.93% 7.81%
B 7370 6541 204 204 2.77% 3.12%
C 7371 6541 898 898 12.18% 13.73%
D 7371 6541 125 125 1.70% 1.91%

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 7 206 1030039 6191.69 670 654 166.3
A 3 14 955132 5741.13 670 654 166.3
A 3 62 461321 2770.89 670 654 166.3
B 2 249 640661 4451.68 676 651 143.8
B 4 171 133339 922.93 676 651 143.8
B 4 81 114521 792.04 676 651 143.8
C 15 224 1495383 8739.17 627 623 171.0
C 15 198 1470485 8593.6 627 623 171.0
C 13 3 420734 2456.19 627 623 171.0
D 12 3 187275 972.72 672 645 191.9
D 3 12 186316 967.72 672 645 191.9
D 10 117 137612 713.88 672 645 191.9

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