ASTROSAT CZTI

Data Quality Report

Orbit 53715

Creation date: 2025-09-03T10:44:36.572233
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/AS1A14_022T04_9000006506_53715cztM0_level2.fits modeM0/AS1A14_022T04_9000006506_53715cztM0_level2_quad_clean.evt
Size (bytes)933,238,08070,689,600
Size890.0 MB 67.4 MB
Events in quadrant A13,711,747224,966
Events in quadrant B3,143,356656,083
Events in quadrant C7,402,667480,433
Events in quadrant D9,790,431330,254

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452081
B0140871
C0264801
D0334888

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6429435767.771037%
B64301041.617418%
C6430147923.001555%
D6429286244.517032%

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 7509 6430 4266 4266 56.81% 66.35%
B 7510 6431 41 41 0.55% 0.64%
C 7510 6431 1024 1024 13.64% 15.92%
D 7508 6429 2385 2385 31.77% 37.10%

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 10583469 88733.67 475 464 119.3
A 3 78 687063 5756.82 475 464 119.3
A 7 206 320559 2683.85 475 464 119.3
B 1 223 171025 1186.9 672 649 143.5
B 5 185 98931 684.67 672 649 143.5
B 0 213 48879 335.99 672 649 143.5
C 15 219 1819951 11487.47 576 573 158.4
C 15 224 1460402 9217.29 576 573 158.4
C 15 158 802763 5064.99 576 573 158.4
D 8 176 5057394 37757.51 463 442 133.9
D 1 241 2131702 15912.96 463 442 133.9
D 7 70 500129 3730.89 463 442 133.9

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