ASTROSAT CZTI

Data Quality Report

Orbit 39397

Creation date: 2024-06-27T22:04:03.792420
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_018T01_9000005470_39397cztM0_level2.fits modeM0/AS1A12_018T01_9000005470_39397cztM0_level2_quad_clean.evt
Size (bytes)977,140,800163,929,600
Size931.9 MB 156.3 MB
Events in quadrant A6,352,6271,182,808
Events in quadrant B4,856,1231,221,353
Events in quadrant C5,623,1691,143,562
Events in quadrant D18,498,343664,098

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0255033
B0220492
C0233632
D0624672

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108511561.437656%
B10851230.211962%
C10851640.589807%
D10851473443.627315%

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 13537 10853 110 110 0.81% 1.01%
B 13537 10853 7 7 0.05% 0.06%
C 13537 10853 55 55 0.41% 0.51%
D 13537 10853 4081 4081 30.15% 37.60%

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 796790 3252.16 1196 1169 244.6
A 13 248 771894 3150.39 1196 1169 244.6
A 2 79 139450 565.23 1196 1169 244.6
B 5 172 113213 486.14 1194 1159 230.5
B 12 111 29329 122.21 1194 1159 230.5
B 11 111 27403 113.86 1194 1159 230.5
C 15 214 480149 1771.06 1166 1170 270.4
C 9 187 341073 1256.81 1166 1170 270.4
C 15 208 215540 792.65 1166 1170 270.4
D 12 235 13996742 58418.99 974 945 239.6
D 13 249 377537 1571.91 974 945 239.6
D 2 249 204695 850.46 974 945 239.6

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