ASTROSAT CZTI

Data Quality Report

Orbit 35741

Creation date: 2022-05-10T16:33:59.232811
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/AS1A09_029T07_9000005128_35741cztM0_level2.evt modeM0/AS1A09_029T07_9000005128_35741cztM0_level2_quad_clean.evt
Size (bytes)250,810,56036,411,840
Size239.2 MB 34.7 MB
Events in quadrant A1,700,512219,211
Events in quadrant B1,808,014220,211
Events in quadrant C1,836,605207,763
Events in quadrant D2,007,001202,634

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A073372
B075891
C076691
D084441

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0740
B0740
C0740
D0740

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A355920.056196%
B3559130.365271%
C3559401.123911%
D3559250.702445%

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 5711 3560 0 0 0.00% 0.00%
B 5711 3560 7 7 0.12% 0.20%
C 5711 3560 36 36 0.63% 1.01%
D 5711 3560 20 20 0.35% 0.56%

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 10 83 86473 1015.48 412 404 84.8
A 7 48 7976 89.34 412 404 84.8
A 7 3 7766 86.86 412 404 84.8
B 5 172 131664 1646.66 410 398 79.7
B 0 189 31695 392.6 410 398 79.7
B 5 255 16807 205.84 410 398 79.7
C 15 214 148795 1622.8 392 395 91.4
C 0 10 126857 1382.9 392 395 91.4
C 9 187 11068 116.71 392 395 91.4
D 1 52 251558 2612.61 392 382 96.1
D 12 17 60074 620.89 392 382 96.1
D 14 52 40878 421.22 392 382 96.1

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