ASTROSAT CZTI

Data Quality Report

Orbit 00785

Creation date: 2024-06-27T14:02:56.024035
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/AS1P01_010T01_9000000108_00785cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00785cztM0_level2_quad_clean.evt
Size (bytes)1,216,319,040109,454,400
Size1.1 GB 104.4 MB
Events in quadrant A9,018,125709,620
Events in quadrant B9,459,439715,971
Events in quadrant C9,293,097692,339
Events in quadrant D8,575,062681,054

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0320880
B0333770
C0328870
D0307360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7405831.120864%
B74051391.877110%
C74051241.674544%
D7406490.661626%

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 7435 7406 446 446 6.00% 6.02%
B 7435 7406 531 531 7.14% 7.17%
C 7435 7406 543 543 7.30% 7.33%
D 7436 7407 405 405 5.45% 5.47%

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 15 171 33478 55.11 2329 2347 564.9
A 12 243 28611 46.49 2329 2347 564.9
A 0 117 10923 15.18 2329 2347 564.9
B 5 191 70043 117.76 2437 2448 574.0
B 15 22 48646 80.48 2437 2448 574.0
B 0 23 33744 54.52 2437 2448 574.0
C 10 17 318813 497.25 2256 2336 636.5
C 9 83 61520 92.99 2256 2336 636.5
C 3 111 38505 56.83 2256 2336 636.5
D 1 4 292086 425.51 2170 2252 681.1
D 2 170 64781 91.8 2170 2252 681.1
D 12 188 28548 38.61 2170 2252 681.1

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