ASTROSAT CZTI

Data Quality Report

Orbit 17377

Creation date: 2024-06-27T17:35:44.317855
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/AS1T03_033T01_9000002568_17377cztM0_level2.evt modeM0/AS1T03_033T01_9000002568_17377cztM0_level2_quad_clean.evt
Size (bytes)1,664,962,560231,696,000
Size1.6 GB 221.0 MB
Events in quadrant A9,090,5341,455,775
Events in quadrant B9,344,6121,481,065
Events in quadrant C9,337,2281,420,861
Events in quadrant D21,336,0801,316,068

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0403814
B0408804
C0404804
D0772964

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0190
C0190
D0190

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03960
B03960
C03960
D03960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A195021780.912727%
B195032951.512588%
C195033181.630518%
D19503336017.228119%

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 21332 19505 1 1 0.00% 0.01%
B 21333 19506 8 8 0.04% 0.04%
C 21333 19506 0 0 0.00% 0.00%
D 21333 19507 3021 3021 14.16% 15.49%

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 13 210 32883 64.17 2352 2296 476.7
A 0 226 20615 38.43 2352 2296 476.7
A 3 137 18115 33.19 2352 2296 476.7
B 4 216 79094 168.56 2352 2291 455.6
B 12 111 56227 118.38 2352 2291 455.6
B 11 111 47942 100.19 2352 2291 455.6
C 14 238 345479 648.22 2252 2263 529.5
C 3 233 196627 367.09 2252 2263 529.5
C 13 61 16056 26.05 2252 2263 529.5
D 11 176 9465967 18078.53 2128 2067 523.5
D 13 232 1297173 2473.99 2128 2067 523.5
D 1 52 934176 1780.57 2128 2067 523.5

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