ASTROSAT CZTI

Data Quality Report

Orbit 53437

Creation date: 2025-10-15T19:10:37.809223
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_011T09_9000006494_53437cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53437cztM0_level2_quad_clean.evt
Size (bytes)375,606,72033,111,360
Size358.2 MB 31.6 MB
Events in quadrant A2,483,226259,625
Events in quadrant B2,677,120265,843
Events in quadrant C6,824,15937,436
Events in quadrant D1,702,656241,552

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0560
B0560
C0560
D0560

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092780
B099030
C02216916
D070090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27691936.970025%
B277036413.140794%
C2768241587.247110%
D2770632.274368%

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 2769 2769 156 156 5.63% 5.63%
B 2770 2770 157 157 5.67% 5.67%
C 2770 2769 2347 2347 84.73% 84.76%
D 2770 2770 61 61 2.20% 2.20%

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 15 174 433399 5740.23 295 287 75.5
A 3 63 411798 5453.94 295 287 75.5
A 3 78 154517 2044.08 295 287 75.5
B 4 171 851058 13524.57 287 278 62.9
B 4 206 271870 4317.41 287 278 62.9
B 5 185 172439 2736.79 287 278 62.9
C 7 64 3079716 84704.3 126 125 36.4
C 1 241 1993900 54838.88 126 125 36.4
C 15 224 587603 16158.61 126 125 36.4
D 2 249 169793 2003.58 294 281 84.6
D 0 18 101784 1199.74 294 281 84.6
D 13 153 85279 1004.65 294 281 84.6

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