ASTROSAT CZTI

Data Quality Report

Orbit 20258

Creation date: 2024-06-27T18:13:07.140644
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_117T01_9000003002_20258cztM0_level2.evt modeM0/AS1A05_117T01_9000003002_20258cztM0_level2_quad_clean.evt
Size (bytes)1,476,696,960242,688,960
Size1.4 GB 231.4 MB
Events in quadrant A10,507,8191,543,490
Events in quadrant B10,014,0441,561,477
Events in quadrant C9,064,6431,503,064
Events in quadrant D13,869,2191,449,961

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03820
B03820
C03820
D03820

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0433524
B0417524
C0385394
D0538254

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187606963.710021%
B187614532.414583%
C187612711.444486%
D187619705.170300%

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 21120 18764 339 339 1.61% 1.81%
B 21121 18765 131 131 0.62% 0.70%
C 21121 18765 0 0 0.00% 0.00%
D 21121 18765 779 779 3.69% 4.15%

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 14 238 602977 1322.71 2254 2204 454.2
A 12 96 532345 1167.2 2254 2204 454.2
A 9 143 458113 1003.77 2254 2204 454.2
B 4 142 277647 644.45 2255 2198 427.4
B 7 220 251690 583.72 2255 2198 427.4
B 0 85 245930 570.24 2255 2198 427.4
C 14 238 341387 658.45 2191 2205 515.1
C 3 233 95826 181.74 2191 2205 515.1
C 3 9 82538 155.95 2191 2205 515.1
D 7 238 2353999 4381.22 2199 2139 536.8
D 1 52 2238998 4166.99 2199 2139 536.8
D 2 16 451771 837.61 2199 2139 536.8

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