ASTROSAT CZTI

Data Quality Report

Orbit 53092

Creation date: 2025-07-23T13:14:20.930999
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_53092cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53092cztM0_level2_quad_clean.evt
Size (bytes)813,890,88065,102,400
Size776.2 MB 62.1 MB
Events in quadrant A12,509,151198,477
Events in quadrant B2,953,562599,076
Events in quadrant C11,057,451273,785
Events in quadrant D3,162,842497,797

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01180
B01180
C01180
D01180

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0410441
B0130381
C0367271
D0137841

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5742402770.132358%
B5742701.219087%
C5743308853.769807%
D57431212.106913%

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 6962 5742 3657 3657 52.53% 63.69%
B 6962 5743 53 53 0.76% 0.92%
C 6963 5743 2937 2937 42.18% 51.14%
D 6963 5744 99 99 1.42% 1.72%

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 9 191 7148509 70292.69 399 390 101.7
A 6 248 2893052 28445.67 399 390 101.7
A 12 80 272007 2671.01 399 390 101.7
B 2 249 274166 2208.7 582 565 123.9
B 0 213 87943 705.38 582 565 123.9
B 4 216 52185 416.71 582 565 123.9
C 1 241 5699851 51361.87 396 393 111.0
C 15 224 2325138 20949.93 396 393 111.0
C 9 38 954164 8595.11 396 393 111.0
D 11 245 240617 1487.72 558 532 161.4
D 2 62 123367 761.16 558 532 161.4
D 2 172 112936 696.53 558 532 161.4

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