ASTROSAT CZTI

Data Quality Report

Orbit 31694

Creation date: 2024-06-27T20:31:37.850381
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/AS1T04_034T01_9000004632_31694cztM0_level2.evt modeM0/AS1T04_034T01_9000004632_31694cztM0_level2_quad_clean.evt
Size (bytes)121,164,48019,247,040
Size115.6 MB 18.4 MB
Events in quadrant A749,203120,916
Events in quadrant B1,106,656122,155
Events in quadrant C915,329114,938
Events in quadrant D797,138116,586

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A080
B080
C080
D080

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0300
B0300
C0300
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030531
B043751
C036731
D032531

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1454100.687758%
B1454110.756534%
C1453473.234687%
D145310.068823%

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 1454 1454 0 0 0.00% 0.00%
B 1454 1454 0 0 0.00% 0.00%
C 1453 1453 21 21 1.45% 1.45%
D 1453 1453 0 0 0.00% 0.00%

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 0 13 23271 585.09 186 182 39.5
A 14 238 6140 150.98 186 182 39.5
A 13 254 2595 61.15 186 182 39.5
B 6 159 385323 10364.67 181 177 37.2
B 12 111 4512 116.66 181 177 37.2
B 11 111 4258 109.82 181 177 37.2
C 3 233 138125 3295.14 170 170 41.9
C 0 10 68015 1620.52 170 170 41.9
C 14 238 27121 643.74 170 170 41.9
D 8 195 108785 2471.64 177 172 43.9
D 10 203 6685 148.21 177 172 43.9
D 2 234 4843 106.3 177 172 43.9

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