ASTROSAT CZTI

Data Quality Report

Orbit 12253

Creation date: 2024-06-27T16:24:30.486828
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/AS1G08_006T04_9000001812_12253cztM0_level2.evt modeM0/AS1G08_006T04_9000001812_12253cztM0_level2_quad_clean.evt
Size (bytes)360,820,80084,764,160
Size344.1 MB 80.8 MB
Events in quadrant A2,514,318568,344
Events in quadrant B3,361,768564,084
Events in quadrant C2,377,765558,942
Events in quadrant D2,347,369539,105

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106561
B0133150
C0104740
D0103520

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0960
B0960
C0960
D0960

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4792561.168614%
B47921913.985810%
C4792511.064274%
D4792470.980801%

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 4793 4793 7 7 0.15% 0.15%
B 4793 4793 103 103 2.15% 2.15%
C 4793 4793 22 22 0.46% 0.46%
D 4793 4793 22 22 0.46% 0.46%

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 1 162 90005 787.89 541 529 113.6
A 7 16 63810 557.23 541 529 113.6
A 1 178 52141 454.48 541 529 113.6
B 4 239 816130 7953.64 537 524 102.5
B 4 206 123120 1195.53 537 524 102.5
B 11 51 114977 1116.13 537 524 102.5
C 15 208 299003 2436.18 524 526 122.5
C 4 175 14995 118.1 524 526 122.5
C 0 207 7251 54.89 524 526 122.5
D 1 52 201648 1599.4 525 510 125.8
D 13 249 32821 256.93 525 510 125.8
D 7 71 29025 226.74 525 510 125.8

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