ASTROSAT CZTI

Data Quality Report

Orbit 34788

Creation date: 2022-03-05T16:13:59.361498
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/AS1C07_004T01_9000004990_34788cztM0_level2.evt modeM0/AS1C07_004T01_9000004990_34788cztM0_level2_quad_clean.evt
Size (bytes)553,694,40093,009,600
Size528.0 MB 88.7 MB
Events in quadrant A4,007,091576,222
Events in quadrant B4,256,483602,167
Events in quadrant C3,311,591616,026
Events in quadrant D4,760,454576,293

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0330
B0330
C0330
D0330

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0158523
B0167142
C0134032
D0184182

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63824036.314635%
B63823335.217800%
C6382420.658101%
D63821201.880288%

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 9758 6384 362 362 3.71% 5.67%
B 9758 6384 225 225 2.31% 3.52%
C 9758 6384 29 29 0.30% 0.45%
D 9758 6384 102 102 1.05% 1.60%

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 7 32 1043799 7062.05 731 715 147.7
A 15 169 59780 399.89 731 715 147.7
A 10 83 51022 340.6 731 715 147.7
B 5 172 917052 6427.91 737 719 142.6
B 5 255 185122 1293.55 737 719 142.6
B 4 232 126736 883.99 737 719 142.6
C 15 214 274096 1594.43 734 741 171.4
C 0 10 123996 718.92 734 741 171.4
C 14 67 22795 128.63 734 741 171.4
D 8 195 1252674 7044.6 727 709 177.7
D 2 249 264944 1486.81 727 709 177.7
D 13 249 144417 808.62 727 709 177.7

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