ASTROSAT CZTI

Data Quality Report

Orbit 53411

Creation date: 2025-08-12T22:09:40.818577
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_53411cztM0_level2.fits modeM0/AS1C09_011T09_9000006494_53411cztM0_level2_quad_clean.evt
Size (bytes)887,114,88064,013,760
Size846.0 MB 61.0 MB
Events in quadrant A4,042,635582,062
Events in quadrant B10,117,108243,740
Events in quadrant C12,349,024221,524
Events in quadrant D5,866,913473,840

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01200
B01200
C01200
D01200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160881
B0341051
C0407028
D0215651

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A59693175.310772%
B5969397166.527056%
C5968395366.236595%
D596988014.742838%

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 7094 5969 199 199 2.81% 3.33%
B 7094 5969 2912 2912 41.05% 48.79%
C 7092 5967 3719 3719 52.44% 62.33%
D 7094 5969 737 737 10.39% 12.35%

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 63 722071 4581.23 632 616 157.5
A 15 174 267202 1692.82 632 616 157.5
A 3 62 113875 719.19 632 616 157.5
B 4 206 6234468 80851.06 361 351 77.1
B 2 249 1560096 20228.53 361 351 77.1
B 4 171 238055 3082.81 361 351 77.1
C 1 241 5629993 53078.05 386 382 106.1
C 15 224 2939337 27709.55 386 382 106.1
C 9 38 596619 5621.54 386 382 106.1
D 2 172 829171 4996.99 585 560 165.8
D 11 245 741470 4468.1 585 560 165.8
D 2 153 392584 2364.13 585 560 165.8

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