ASTROSAT CZTI

Data Quality Report

Orbit 36761

Creation date: 2024-06-27T21:31:18.265370
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/AS1A11_101T01_9000005238_36761cztM0_level2.evt modeM0/AS1A11_101T01_9000005238_36761cztM0_level2_quad_clean.evt
Size (bytes)1,386,348,48099,221,760
Size1.3 GB 94.6 MB
Events in quadrant A5,320,566766,269
Events in quadrant B24,105,45721,064
Events in quadrant C5,792,364744,932
Events in quadrant D6,032,142716,470

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227354
B0790693
C0236503
D0253523

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02220
B02220
C02220
D02220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0350
B0350
C0350
D0360

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10869220.202411%
B108691073898.794737%
C10869750.690036%
D108692662.447327%

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 13646 10871 4 4 0.03% 0.04%
B 13645 10868 7811 7811 57.24% 71.87%
C 13646 10871 72 72 0.53% 0.66%
D 13646 10871 214 214 1.57% 1.97%

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 10 83 406384 1608.13 1243 1218 251.9
A 9 143 60932 237.01 1243 1218 251.9
A 13 6 24988 94.34 1243 1218 251.9
B 12 1 23548277 1044790.23 109 106 22.5
B 4 171 50802 2249.29 109 106 22.5
B 0 213 24061 1062.84 109 106 22.5
C 15 214 464722 1657.54 1203 1209 279.6
C 14 254 443991 1583.41 1203 1209 279.6
C 15 159 56944 199.31 1203 1209 279.6
D 13 171 567390 1923.04 1200 1165 294.4
D 13 249 287877 973.74 1200 1165 294.4
D 12 6 150102 505.83 1200 1165 294.4

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