ASTROSAT CZTI

Data Quality Report

Orbit 27792

Creation date: 2024-06-27T19:44:27.576082
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/AS1A10_016T01_9000004016_27792cztM0_level2.evt modeM0/AS1A10_016T01_9000004016_27792cztM0_level2_quad_clean.evt
Size (bytes)619,680,96069,428,160
Size591.0 MB 66.2 MB
Events in quadrant A3,520,225431,418
Events in quadrant B4,282,154433,566
Events in quadrant C3,781,634420,640
Events in quadrant D6,757,817377,736

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0180
C0180
D0180

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145810
B0169080
C0154930
D0246180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6282550.875517%
B62823655.810252%
C62821602.546960%
D6281113218.022608%

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 7637 6283 1 1 0.01% 0.02%
B 7637 6283 163 163 2.13% 2.59%
C 7637 6282 11 11 0.14% 0.18%
D 7635 6280 989 989 12.95% 15.75%

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 13 254 11566 59.08 909 895 180.6
A 4 2 10428 52.78 909 895 180.6
A 3 137 7858 38.55 909 895 180.6
B 3 64 700474 4253.41 884 866 164.5
B 10 245 92000 554.07 884 866 164.5
B 15 32 26657 156.8 884 866 164.5
C 3 233 189983 931.33 883 892 203.0
C 14 238 144272 706.19 883 892 203.0
C 13 61 6075 25.53 883 892 203.0
D 1 52 3410305 17293.31 832 810 197.2
D 2 250 66180 331.56 832 810 197.2
D 13 172 57374 286.9 832 810 197.2

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