ASTROSAT CZTI

Data Quality Report

Orbit 52662

Creation date: 2025-06-23T13:06:22.345113
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_9000006480_52662cztM0_level2.fits modeM0/AS1C09_011T07_9000006480_52662cztM0_level2_quad_clean.evt
Size (bytes)1,218,931,20065,289,600
Size1.1 GB 62.3 MB
Events in quadrant A5,484,216644,543
Events in quadrant B7,473,965638,620
Events in quadrant C17,353,91536,530
Events in quadrant D14,260,428161,550

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01420
B01420
C01420
D01420

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213860
B0272320
C0564100
D0472905

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71142343.289289%
B711484211.835817%
C7114677895.276919%
D7113513672.205820%

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 7114 7114 217 217 3.05% 3.05%
B 7113 7113 662 662 9.31% 9.31%
C 7113 7113 6520 6520 91.66% 91.66%
D 7112 7112 4538 4538 63.81% 63.81%

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 1687289 9488.03 712 697 177.8
A 8 249 313423 1759.26 712 697 177.8
A 15 174 276987 1554.29 712 697 177.8
B 10 128 2534603 17028.81 692 667 148.8
B 12 32 653780 4389.11 692 667 148.8
B 10 254 466926 3133.4 692 667 148.8
C 15 233 8822446 167975.47 185 183 52.5
C 15 224 7074599 134696.55 185 183 52.5
C 15 248 163105 3102.03 185 183 52.5
D 12 3 11802670 142468.65 267 253 82.8
D 8 176 865857 10448.83 267 253 82.8
D 1 7 241229 2908.86 267 253 82.8

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