ASTROSAT CZTI

Data Quality Report

Orbit 53153

Creation date: 2025-07-26T13:27:55.965712
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_011T07_9000006488_53153cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53153cztM0_level2_quad_clean.evt
Size (bytes)519,860,16089,844,480
Size495.8 MB 85.7 MB
Events in quadrant A3,334,753602,931
Events in quadrant B3,483,254630,487
Events in quadrant C7,279,995499,675
Events in quadrant D4,640,835534,397

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149031
B0153001
C0261896
D0183496

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64971722.647376%
B64983044.678363%
C6495115817.829099%
D64963335.126232%

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 7250 6496 77 77 1.06% 1.19%
B 7251 6497 125 125 1.72% 1.92%
C 7251 6496 1091 1091 15.05% 16.79%
D 7251 6496 246 246 3.39% 3.79%

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 12 3 390629 2346.15 668 651 166.2
A 0 8 108090 646.36 668 651 166.2
A 12 194 53441 317.59 668 651 166.2
B 2 249 389962 2800.67 655 630 139.0
B 1 255 133465 955.55 655 630 139.0
B 0 182 107138 766.17 655 630 139.0
C 0 240 2830664 16887.56 607 601 167.6
C 15 224 838629 5000.68 607 601 167.6
C 13 3 234383 1395.02 607 601 167.6
D 8 176 683163 3788.59 631 602 180.2
D 15 125 277707 1538.08 631 602 180.2
D 13 170 243121 1346.11 631 602 180.2

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