ASTROSAT CZTI

Data Quality Report

Orbit 37938

Creation date: 2024-06-27T21:46:22.402103
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/AS1A11_082T01_9000005356_37938cztM0_level2.evt modeM0/AS1A11_082T01_9000005356_37938cztM0_level2_quad_clean.evt
Size (bytes)482,713,92058,374,720
Size460.4 MB 55.7 MB
Events in quadrant A3,070,834353,417
Events in quadrant B2,842,655362,930
Events in quadrant C2,815,392369,980
Events in quadrant D5,521,549300,388

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0123383
B0118682
C0114562
D0201832

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01100
B01100
C01100
D01100

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5434200.368053%
B5434430.791314%
C5434270.496872%
D543480014.722120%

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 7256 5435 13 13 0.18% 0.24%
B 7256 5435 22 22 0.30% 0.40%
C 7256 5435 15 15 0.21% 0.28%
D 7256 5435 753 753 10.38% 13.85%

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 362653 2858.67 630 619 126.6
A 15 222 191256 1505.3 630 619 126.6
A 7 3 26076 201.01 630 619 126.6
B 5 172 255692 2136.19 632 616 119.4
B 0 230 60050 497.74 632 616 119.4
B 4 171 24025 196.04 632 616 119.4
C 15 214 230074 1598.71 623 628 143.5
C 0 10 139058 964.54 623 628 143.5
C 14 254 7262 46.22 623 628 143.5
D 1 52 2029028 14333.67 588 572 141.5
D 12 233 943271 6661.39 588 572 141.5
D 9 35 115254 810.38 588 572 141.5

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