ASTROSAT CZTI

Data Quality Report

Orbit 23781

Creation date: 2024-06-27T18:58:38.933648
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_180T01_9000003524_23781cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23781cztM0_level2_quad_clean.evt
Size (bytes)510,232,32073,071,360
Size486.6 MB 69.7 MB
Events in quadrant A3,440,979461,629
Events in quadrant B4,199,299446,754
Events in quadrant C3,449,047441,770
Events in quadrant D3,948,271435,195

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0142242
B0166062
C0141002
D0157772

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6120971.584967%
B61193275.344010%
C61191242.026475%
D61192143.497303%

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 7450 6120 0 0 0.00% 0.00%
B 7449 6119 202 202 2.71% 3.30%
C 7449 6119 0 0 0.00% 0.00%
D 7449 6119 107 107 1.44% 1.75%

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 11267 59.14 893 879 175.6
A 0 226 8066 40.91 893 879 175.6
A 3 137 7031 35.02 893 879 175.6
B 3 64 692847 4283.46 872 855 161.5
B 0 189 40777 247.12 872 855 161.5
B 0 245 29463 177.08 872 855 161.5
C 14 238 137413 707.86 840 849 192.9
C 4 175 26992 135.51 840 849 192.9
C 13 61 5851 25.93 840 849 192.9
D 5 222 239809 1173.82 848 827 203.6
D 12 233 161643 789.89 848 827 203.6
D 1 52 140407 685.58 848 827 203.6

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