ASTROSAT CZTI

Data Quality Report

Orbit 34891

Creation date: 2022-03-12T15:58:24.220502
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/AS1T04_077T01_9000004994_34891cztM0_level2.evt modeM0/AS1T04_077T01_9000004994_34891cztM0_level2_quad_clean.evt
Size (bytes)517,602,24081,089,280
Size493.6 MB 77.3 MB
Events in quadrant A3,102,706509,003
Events in quadrant B3,878,598510,182
Events in quadrant C3,423,855501,432
Events in quadrant D4,819,932471,502

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134213
B0157162
C0137642
D0189732

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A664380.120428%
B66431011.520397%
C6643150.225802%
D6643681.023634%

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 9299 6645 0 0 0.00% 0.00%
B 9299 6645 52 52 0.56% 0.78%
C 9299 6645 9 9 0.10% 0.14%
D 9299 6645 57 57 0.61% 0.86%

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 63098 398.0 783 767 156.6
A 13 6 12321 73.77 783 767 156.6
A 13 254 10741 63.69 783 767 156.6
B 0 190 328733 2180.57 778 758 150.4
B 4 171 290074 1923.55 778 758 150.4
B 5 172 108432 715.88 778 758 150.4
C 15 214 299814 1679.53 763 768 178.1
C 0 10 64772 359.47 763 768 178.1
C 14 67 54369 301.04 763 768 178.1
D 8 195 1278495 6888.54 757 737 185.5
D 12 227 147230 789.76 757 737 185.5
D 13 249 102695 549.67 757 737 185.5

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