ASTROSAT CZTI

Data Quality Report

Orbit 27627

Creation date: 2024-06-27T19:42:19.858176
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_257T01_9000003976_27627cztM0_level2.evt modeM0/AS1T03_257T01_9000003976_27627cztM0_level2_quad_clean.evt
Size (bytes)2,121,289,920381,139,200
Size2.0 GB 363.5 MB
Events in quadrant A13,163,4602,470,358
Events in quadrant B16,941,2692,483,257
Events in quadrant C13,305,0812,390,193
Events in quadrant D18,942,0962,273,825

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0577730
B0684360
C0576930
D0753190

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A280135061.806304%
B2801416966.054116%
C280145311.895481%
D2801415585.561505%

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 31752 28016 18 18 0.06% 0.06%
B 31752 28016 801 801 2.52% 2.86%
C 31751 28017 0 0 0.00% 0.00%
D 31752 28017 1162 1162 3.66% 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 12 96 82251 116.74 3369 3292 676.4
A 13 254 47067 64.72 3369 3292 676.4
A 3 137 32935 43.83 3369 3292 676.4
B 3 64 2211953 3543.62 3278 3188 623.3
B 10 245 1450594 2322.14 3278 3188 623.3
B 0 230 148592 233.28 3278 3188 623.3
C 14 238 518113 682.09 3233 3255 754.8
C 3 233 74263 94.07 3233 3255 754.8
C 2 16 41287 50.39 3233 3255 754.8
D 1 52 3007404 3904.54 3220 3126 769.4
D 7 80 2815033 3654.52 3220 3126 769.4
D 2 250 725434 938.75 3220 3126 769.4

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