ASTROSAT CZTI

Data Quality Report

Orbit 23777

Creation date: 2024-06-27T18:58:36.765296
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/AS1T03_180T01_9000003524_23777cztM0_level2.evt modeM0/AS1T03_180T01_9000003524_23777cztM0_level2_quad_clean.evt
Size (bytes)548,130,240101,113,920
Size522.7 MB 96.4 MB
Events in quadrant A3,831,573637,110
Events in quadrant B4,018,141649,665
Events in quadrant C3,887,043623,308
Events in quadrant D4,333,905609,676

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0163092
B0166662
C0163232
D0176372

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78071201.537082%
B78071441.844499%
C78071461.870117%
D78071211.549891%

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 9662 7807 0 0 0.00% 0.00%
B 9662 7807 11 11 0.11% 0.14%
C 9662 7807 0 0 0.00% 0.00%
D 9662 7807 23 23 0.24% 0.29%

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 13531 62.46 994 972 201.1
A 3 137 8610 37.98 994 972 201.1
A 0 226 8503 37.45 994 972 201.1
B 0 245 48599 250.35 987 960 190.3
B 15 33 35372 180.84 987 960 190.3
B 12 111 22583 113.63 987 960 190.3
C 14 238 150730 672.95 954 961 222.6
C 7 247 16451 69.6 954 961 222.6
C 13 61 6531 25.03 954 961 222.6
D 8 195 348422 1466.35 972 943 237.0
D 1 52 142386 596.89 972 943 237.0
D 12 233 121968 510.72 972 943 237.0

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