ASTROSAT CZTI

Data Quality Report

Orbit 04938

Creation date: 2024-06-27T14:49:05.487085
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/AS1G05_021T01_9000000624_04938cztM0_level2.evt modeM0/AS1G05_021T01_9000000624_04938cztM0_level2_quad_clean.evt
Size (bytes)573,621,12098,691,840
Size547.0 MB 94.1 MB
Events in quadrant A5,857,104547,905
Events in quadrant B3,194,282676,580
Events in quadrant C4,143,358663,647
Events in quadrant D3,738,338648,568

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0217612
B0139071
C0168651
D0158171

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6469137921.317051%
B6469410.633792%
C64692764.266502%
D64691412.179626%

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 7274 6470 933 933 12.83% 14.42%
B 7274 6470 12 12 0.16% 0.19%
C 7274 6470 171 171 2.35% 2.64%
D 7274 6470 135 135 1.86% 2.09%

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 0 31 3372116 27094.83 600 586 124.4
A 0 50 127443 1019.46 600 586 124.4
A 13 251 26039 204.55 600 586 124.4
B 15 204 162326 1163.82 731 714 138.9
B 0 219 102308 731.61 731 714 138.9
B 4 48 29704 208.77 731 714 138.9
C 9 247 1392208 8757.46 690 693 158.9
C 1 16 47565 294.99 690 693 158.9
C 12 4 7383 42.1 690 693 158.9
D 2 33 317499 1869.89 695 674 169.4
D 12 110 251575 1480.81 695 674 169.4
D 2 136 111165 652.11 695 674 169.4

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