ASTROSAT CZTI

Data Quality Report

Orbit 38376

Creation date: 2024-06-27T21:51:46.632980
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/AS1A12_005T08_9000005380_38376cztM0_level2.fits modeM0/AS1A12_005T08_9000005380_38376cztM0_level2_quad_clean.evt
Size (bytes)152,003,52041,184,000
Size145.0 MB 39.3 MB
Events in quadrant A1,273,416277,495
Events in quadrant B1,153,186285,797
Events in quadrant C1,175,728276,040
Events in quadrant D1,851,369249,424

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A050802
B047071
C047311
D071891

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2195180.820046%
B219520.091116%
C219590.410023%
D2195542.460137%

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 4318 2196 9 9 0.21% 0.41%
B 4318 2196 0 0 0.00% 0.00%
C 4318 2196 4 4 0.09% 0.18%
D 4318 2196 47 47 1.09% 2.14%

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 175366 3169.42 266 261 55.2
A 9 143 53464 962.98 266 261 55.2
A 13 6 7930 138.81 266 261 55.2
B 0 183 29718 559.54 265 258 52.7
B 0 230 16470 307.92 265 258 52.7
B 4 232 16180 302.41 265 258 52.7
C 15 214 93983 1524.59 260 261 61.5
C 15 159 31685 511.18 260 261 61.5
C 14 254 20989 337.18 260 261 61.5
D 10 203 538074 8337.19 255 248 64.5
D 2 16 100491 1553.93 255 248 64.5
D 2 250 70337 1086.5 255 248 64.5

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