ASTROSAT CZTI

Data Quality Report

Orbit 37478

Creation date: 2024-06-27T21:40:31.332424
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/AS1A11_027T01_9000005324_37478cztM0_level2.evt modeM0/AS1A11_027T01_9000005324_37478cztM0_level2_quad_clean.evt
Size (bytes)199,281,60050,057,280
Size190.0 MB 47.7 MB
Events in quadrant A1,302,672338,057
Events in quadrant B1,274,668354,252
Events in quadrant C1,313,968341,109
Events in quadrant D1,975,358305,931

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A054281
B053191
C052801
D074971

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A245560.244399%
B2455210.855397%
C2455311.262729%
D24552068.391039%

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 2455 2455 8 8 0.33% 0.33%
B 2455 2455 18 18 0.73% 0.73%
C 2455 2455 25 25 1.02% 1.02%
D 2455 2455 194 194 7.90% 7.90%

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 128567 2251.43 279 274 57.0
A 15 222 54185 946.09 279 274 57.0
A 13 248 21394 370.64 279 274 57.0
B 5 172 54996 1014.01 285 278 54.0
B 5 173 34708 638.04 285 278 54.0
B 0 190 17070 311.18 285 278 54.0
C 15 214 103406 1574.29 283 286 65.5
C 0 10 77450 1178.03 283 286 65.5
C 0 207 14838 222.16 283 286 65.5
D 13 249 823215 12696.27 265 258 64.8
D 2 250 48447 743.44 265 258 64.8
D 2 153 29499 451.12 265 258 64.8

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