ASTROSAT CZTI

Data Quality Report

Orbit 53008

Creation date: 2025-07-16T21:51:15.743498
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_53008cztM0_level2.fits modeM0/AS1C09_011T07_9000006488_53008cztM0_level2_quad_clean.evt
Size (bytes)1,266,217,92046,589,760
Size1.2 GB 44.4 MB
Events in quadrant A15,464,93326,349
Events in quadrant B4,863,932621,908
Events in quadrant C12,166,584172,192
Events in quadrant D13,892,390151,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0501771
B0188281
C0404446
D0455421

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6284607996.737747%
B62842824.487588%
C6284466274.188415%
D6284476875.875239%

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 7023 6283 5650 5650 80.45% 89.93%
B 7024 6285 61 61 0.87% 0.97%
C 7024 6284 3121 3121 44.43% 49.67%
D 7024 6284 4192 4192 59.68% 66.71%

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 12923590 203752.55 240 232 63.4
A 15 190 901639 14211.78 240 232 63.4
A 4 238 371623 5855.43 240 232 63.4
B 10 254 1826582 13482.93 635 614 135.4
B 10 247 88027 645.46 635 614 135.4
B 5 185 54879 400.69 635 614 135.4
C 7 80 6174638 70305.47 318 315 87.8
C 12 254 2205126 25105.63 318 315 87.8
C 15 224 1260218 14346.2 318 315 87.8
D 12 17 5170188 46977.23 376 358 110.0
D 2 62 4047186 36772.73 376 358 110.0
D 8 176 2119474 19255.99 376 358 110.0

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