ASTROSAT CZTI

Data Quality Report

Orbit 37536

Creation date: 2024-06-27T21:41:11.988442
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/AS1A09_061T01_9000005330_37536cztM0_level2.evt modeM0/AS1A09_061T01_9000005330_37536cztM0_level2_quad_clean.evt
Size (bytes)124,312,32024,958,080
Size118.6 MB 23.8 MB
Events in quadrant A1,310,697162,369
Events in quadrant B805,535172,812
Events in quadrant C792,378169,328
Events in quadrant D772,450160,400

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A047701
B031881
C030591
D030511

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1196564.682274%
B1196181.505017%
C1196453.762542%
D1196262.173913%

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 1196 1196 36 36 3.01% 3.01%
B 1196 1196 10 10 0.84% 0.84%
C 1196 1196 37 37 3.09% 3.09%
D 1196 1196 14 14 1.17% 1.17%

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 15 222 610140 18550.28 151 148 32.9
A 10 83 106006 3219.22 151 148 32.9
A 13 6 4577 134.69 151 148 32.9
B 4 141 66292 2131.69 156 152 31.0
B 5 200 39186 1258.06 156 152 31.0
B 0 190 25195 807.13 156 152 31.0
C 14 254 93976 2482.97 153 153 37.8
C 15 214 53413 1409.49 153 153 37.8
C 0 10 45943 1211.8 153 153 37.8
D 2 249 53160 1360.93 151 147 39.0
D 12 233 40115 1026.04 151 147 39.0
D 12 227 21420 546.11 151 147 39.0

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