ASTROSAT CZTI

Data Quality Report

Orbit 24809

Creation date: 2024-06-27T19:10:07.576886
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/AS1T03_197T01_9000003626_24809cztM0_level2.evt modeM0/AS1T03_197T01_9000003626_24809cztM0_level2_quad_clean.evt
Size (bytes)225,688,32043,076,160
Size215.2 MB 41.1 MB
Events in quadrant A1,610,764282,557
Events in quadrant B1,689,838271,910
Events in quadrant C1,639,164266,667
Events in quadrant D1,678,351258,905

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138
B0135
C0136
D0137

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010040
B09839
C010032
D010034

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102383746
B0111454419
C0103803758
D0111184343

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A318270.219987%
B3093300.969932%
C3196260.813517%
D3091120.388224%

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 6002 3906 0 0 0.00% 0.00%
B 6029 3847 7 7 0.12% 0.18%
C 6002 3924 0 0 0.00% 0.00%
D 6049 3840 8 8 0.13% 0.21%

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 4685 50.67 417 410 84.4
A 3 137 3672 38.66 417 410 84.4
A 0 226 3582 37.59 417 410 84.4
B 3 64 114453 1489.12 400 391 76.6
B 12 111 9059 113.16 400 391 76.6
B 11 111 8222 102.24 400 391 76.6
C 14 238 64761 696.74 395 398 92.4
C 2 16 29718 317.39 395 398 92.4
C 13 61 2766 25.63 395 398 92.4
D 8 195 126495 1329.64 391 378 94.9
D 1 52 69249 726.1 391 378 94.9
D 2 234 11172 113.8 391 378 94.9

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