ASTROSAT CZTI

Data Quality Report

Orbit 39002

Creation date: 2024-06-27T21:59:09.776172
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_061T07_9000005422_39002cztM0_level2.fits modeM0/AS1A12_061T07_9000005422_39002cztM0_level2_quad_clean.evt
Size (bytes)88,704,00022,377,600
Size84.6 MB 21.3 MB
Events in quadrant A1,328,919148,480
Events in quadrant B590,065152,396
Events in quadrant C616,659144,251
Events in quadrant D643,372134,781

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A048602
B026401
C026241
D028081

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A1306473.598775%
B130620.153139%
C130610.076570%
D1306120.918836%

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 2710 1307 68 68 2.51% 5.20%
B 2710 1307 0 0 0.00% 0.00%
C 2710 1307 0 0 0.00% 0.00%
D 2710 1307 9 9 0.33% 0.69%

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 574241 18217.42 145 142 31.5
A 10 83 140637 4458.21 145 142 31.5
A 13 248 45209 1430.07 145 142 31.5
B 0 230 8826 284.24 146 142 30.6
B 12 111 3591 112.89 146 142 30.6
B 11 111 3338 104.61 146 142 30.6
C 15 214 57769 1629.0 142 143 35.4
C 15 159 1512 38.7 142 143 35.4
C 15 208 1038 25.3 142 143 35.4
D 12 235 42038 1165.97 141 136 35.9
D 2 153 39009 1081.68 141 136 35.9
D 2 250 8317 227.65 141 136 35.9

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