ASTROSAT CZTI

Data Quality Report

Orbit 25628

Creation date: 2024-06-27T19:19:43.038293
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/AS1A07_127T03_9000003732_25628cztM0_level2.evt modeM0/AS1A07_127T03_9000003732_25628cztM0_level2_quad_clean.evt
Size (bytes)939,372,480129,833,280
Size895.9 MB 123.8 MB
Events in quadrant A5,567,960820,599
Events in quadrant B5,178,407831,008
Events in quadrant C5,125,886786,397
Events in quadrant D11,845,213743,466

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A060
B060
C060
D060

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0229970
B0220820
C0220100
D0429030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10843800.737803%
B10844610.562523%
C10842970.894669%
D108437917.295029%

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 11423 10844 22 22 0.19% 0.20%
B 11424 10845 1 1 0.01% 0.01%
C 11424 10845 0 0 0.00% 0.00%
D 11424 10845 754 754 6.60% 6.95%

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 8 192 275418 1045.68 1300 1274 262.2
A 0 13 175321 663.88 1300 1274 262.2
A 6 16 93262 350.87 1300 1274 262.2
B 0 219 42209 164.16 1293 1256 249.5
B 0 190 33129 127.76 1293 1256 249.5
B 3 112 32077 123.55 1293 1256 249.5
C 14 238 196993 663.89 1249 1257 294.8
C 3 233 58416 193.87 1249 1257 294.8
C 2 16 8661 25.11 1249 1257 294.8
D 13 174 4885448 16078.75 1242 1207 303.8
D 1 52 1599898 5262.83 1242 1207 303.8
D 8 195 371967 1220.53 1242 1207 303.8

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