ASTROSAT CZTI

Data Quality Report

Orbit 20170417_C02_033T01_9000001178_level2

Creation date: 2025-11-11T21:21:57.384414
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/AS1C02_033T01_9000001178cztM0_level2.fits modeM0/AS1C02_033T01_9000001178cztM0_level2_quad_clean.evt
Size (bytes)200,836,800186,693,120
Size191.5 MB 178.0 MB
Events in quadrant A1,208,9361,074,962
Events in quadrant B1,169,6821,093,662
Events in quadrant C1,192,9101,044,356
Events in quadrant D1,025,470955,186

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0466910
B0480460
C0452180
D0486720

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04380
B04380
C04380
D04380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215705632.610107%
B215695722.651954%
C215702251.043115%
D215704492.081595%

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 22531 21571 0 0 0.00% 0.00%
B 22531 21571 0 0 0.00% 0.00%
C 22531 21571 0 0 0.00% 0.00%
D 22531 21541 0 0 0.00% 0.00%

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 14 188 1225 11.47 312 290 81.5
A 0 29 1181 10.93 312 290 81.5
A 14 204 1027 9.04 312 290 81.5
B 2 9 991 10.36 309 292 67.5
B 5 225 806 7.62 309 292 67.5
B 12 226 781 7.25 309 292 67.5
C 12 241 839 6.5 315 290 84.5
C 2 191 836 6.46 315 290 84.5
C 9 242 808 6.13 315 290 84.5
D 6 231 764 6.14 293 264 81.4
D 1 19 726 5.68 293 264 81.4
D 7 5 719 5.59 293 264 81.4

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