ASTROSAT CZTI

Data Quality Report

Orbit 21561

Creation date: 2024-06-27T18:29:30.779033
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/AS1A06_009T02_9000003194_21561cztM0_level2.evt modeM0/AS1A06_009T02_9000003194_21561cztM0_level2_quad_clean.evt
Size (bytes)1,007,035,200120,303,360
Size960.4 MB 114.7 MB
Events in quadrant A4,551,165790,212
Events in quadrant B4,935,547798,506
Events in quadrant C4,613,821773,588
Events in quadrant D15,716,916581,919

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050
B050
C050
D050

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0203461
B0211411
C0204251
D0536381

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02040
B02040
C02040
D02040

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10070150.148957%
B10071240.238308%
C10071630.625559%
D10071422641.962069%

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 10600 10071 0 0 0.00% 0.00%
B 10601 10072 6 6 0.06% 0.06%
C 10601 10072 0 0 0.00% 0.00%
D 10601 10072 3898 3898 36.77% 38.70%

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 15661 60.79 1179 1155 238.6
A 0 226 10196 37.89 1179 1155 238.6
A 3 137 9805 36.25 1179 1155 238.6
B 0 228 116336 513.55 1181 1151 224.3
B 0 230 94897 417.97 1181 1151 224.3
B 0 189 61249 267.95 1181 1151 224.3
C 14 238 177060 661.7 1130 1138 265.9
C 3 233 17676 62.2 1130 1138 265.9
C 8 128 9206 30.35 1130 1138 265.9
D 1 52 11436366 52497.99 892 864 217.8
D 2 136 306096 1401.26 892 864 217.8
D 13 153 196378 897.56 892 864 217.8

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