ASTROSAT CZTI

Data Quality Report

Orbit 19370

Creation date: 2024-06-27T18:02:03.890374
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/AS1A05_226T06_9000002864_19370cztM0_level2.evt modeM0/AS1A05_226T06_9000002864_19370cztM0_level2_quad_clean.evt
Size (bytes)232,859,52043,994,880
Size222.1 MB 42.0 MB
Events in quadrant A1,174,967307,351
Events in quadrant B1,358,779309,549
Events in quadrant C1,438,111292,454
Events in quadrant D2,923,715257,975

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A049261
B055091
C057411
D0102735

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0480
B0480
C0480
D0480

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2278421.843723%
B2278703.072871%
C2278873.819140%
D227757425.208608%

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 2878 2279 0 0 0.00% 0.00%
B 2878 2279 5 5 0.17% 0.22%
C 2878 2279 15 15 0.52% 0.66%
D 2876 2276 359 359 12.48% 15.77%

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 3 1 3685 52.64 303 296 64.4
A 0 226 2692 37.22 303 296 64.4
A 13 254 2590 35.64 303 296 64.4
B 6 36 98951 1626.83 300 292 60.6
B 4 216 39244 642.3 300 292 60.6
B 15 32 20645 335.61 300 292 60.6
C 9 54 247467 3541.08 289 290 69.8
C 14 238 45001 640.53 289 290 69.8
C 3 233 8719 120.75 289 290 69.8
D 10 66 1031165 15078.91 270 261 68.4
D 1 52 463553 6776.52 270 261 68.4
D 7 238 185289 2706.38 270 261 68.4

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