ASTROSAT CZTI

Data Quality Report

Orbit 26091

Creation date: 2024-06-27T19:24:55.323696
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_126T01_9000003772_26091cztM0_level2.evt modeM0/AS1A09_126T01_9000003772_26091cztM0_level2_quad_clean.evt
Size (bytes)559,880,640101,465,280
Size533.9 MB 96.8 MB
Events in quadrant A3,371,819667,378
Events in quadrant B3,484,656672,690
Events in quadrant C3,373,629639,538
Events in quadrant D6,238,829592,898

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0146500
B0148780
C0147530
D0233860

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7178170.236835%
B7179340.473604%
C7179560.780053%
D71796949.667085%

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 7683 7178 0 0 0.00% 0.00%
B 7684 7180 0 0 0.00% 0.00%
C 7684 7180 0 0 0.00% 0.00%
D 7684 7180 711 711 9.25% 9.90%

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 12237 64.11 873 856 177.5
A 3 137 8149 41.08 873 856 177.5
A 0 226 7669 38.38 873 856 177.5
B 0 190 32234 187.83 867 846 167.1
B 0 229 24159 139.51 867 846 167.1
B 12 111 20468 117.42 867 846 167.1
C 14 238 131590 671.17 826 833 194.8
C 3 233 19068 93.6 826 833 194.8
C 13 61 5805 25.52 826 833 194.8
D 1 52 3002029 15359.8 810 789 195.4
D 10 230 96006 487.3 810 789 195.4
D 12 233 56820 286.76 810 789 195.4

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