ASTROSAT CZTI

Data Quality Report

Orbit 29270

Creation date: 2024-06-27T20:02:05.103202
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/AS1A10_045T08_9000004208_29270cztM0_level2.evt modeM0/AS1A10_045T08_9000004208_29270cztM0_level2_quad_clean.evt
Size (bytes)712,517,76071,153,280
Size679.5 MB 67.9 MB
Events in quadrant A3,491,692434,937
Events in quadrant B4,188,839435,062
Events in quadrant C7,051,501414,755
Events in quadrant D6,404,974412,598

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01320
B01320
C01320
D01320

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0143482
B0168132
C0256442
D0237642

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A65541201.830943%
B65542313.524565%
C655475711.550198%
D65534597.004425%

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 7678 6554 0 0 0.00% 0.00%
B 7678 6554 29 29 0.38% 0.44%
C 7678 6554 132 132 1.72% 2.01%
D 7677 6553 256 256 3.33% 3.91%

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 12298 63.23 903 888 180.4
A 3 137 8422 41.75 903 888 180.4
A 0 226 7640 37.42 903 888 180.4
B 0 229 257940 1532.38 883 861 167.8
B 0 183 256438 1523.43 883 861 167.8
B 10 245 194134 1152.05 883 861 167.8
C 3 233 3548758 18009.71 845 853 197.0
C 14 238 139034 701.43 845 853 197.0
C 7 247 48232 240.5 845 853 197.0
D 1 52 1588753 7776.21 862 843 204.2
D 8 195 1261838 6175.26 862 843 204.2
D 13 153 92947 451.05 862 843 204.2

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