ASTROSAT CZTI

Data Quality Report

Orbit 38267

Creation date: 2024-06-27T21:50:31.514231
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/AS1A07_145T01_9000005370_38267cztM0_level2.fits modeM0/AS1A07_145T01_9000005370_38267cztM0_level2_quad_clean.evt
Size (bytes)781,346,880178,574,400
Size745.2 MB 170.3 MB
Events in quadrant A5,478,5031,212,206
Events in quadrant B5,174,9231,230,369
Events in quadrant C6,066,5891,164,590
Events in quadrant D11,366,8271,051,408

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0280
B0280
C0280
D0280

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0227613
B0226922
C0246222
D0414342

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10807200.185065%
B108071201.110391%
C108071231.138151%
D108075465.052281%

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 13582 10809 7 7 0.05% 0.06%
B 13582 10809 45 45 0.33% 0.42%
C 13582 10809 89 89 0.66% 0.82%
D 13582 10809 571 571 4.20% 5.28%

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 689588 2859.54 1201 1175 240.7
A 12 189 73616 300.91 1201 1175 240.7
A 9 143 40707 164.21 1201 1175 240.7
B 5 172 353776 1531.5 1188 1156 230.2
B 15 85 59033 251.37 1188 1156 230.2
B 0 189 39689 167.36 1188 1156 230.2
C 14 254 494793 1825.52 1163 1170 270.4
C 15 214 451148 1664.11 1163 1170 270.4
C 10 70 331182 1220.45 1163 1170 270.4
D 10 203 4701203 16722.75 1150 1118 281.1
D 12 235 724054 2572.18 1150 1118 281.1
D 2 250 621998 2209.07 1150 1118 281.1

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