ASTROSAT CZTI

Data Quality Report

Orbit 23784

Creation date: 2024-06-27T18:58:41.117970
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_113T01_9000003526_23784cztM0_level2.evt modeM0/AS1A07_113T01_9000003526_23784cztM0_level2_quad_clean.evt
Size (bytes)312,264,00068,716,800
Size297.8 MB 65.5 MB
Events in quadrant A2,166,903445,555
Events in quadrant B2,330,618457,571
Events in quadrant C2,213,875439,052
Events in quadrant D2,442,635426,234

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0920
B0920
C0920
D0920

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A092761
B097361
C093311
D0102261

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A4437180.405680%
B4437641.442416%
C4437551.239576%
D4437300.676133%

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 5452 4438 0 0 0.00% 0.00%
B 5452 4437 20 20 0.37% 0.45%
C 5452 4438 0 0 0.00% 0.00%
D 5452 4437 11 11 0.20% 0.25%

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 13 254 7277 59.43 561 551 113.2
A 3 137 4885 38.3 561 551 113.2
A 0 226 4835 37.85 561 551 113.2
B 3 64 105383 972.04 558 547 107.9
B 0 189 14971 133.74 558 547 107.9
B 12 111 12834 113.93 558 547 107.9
C 14 238 86031 675.67 538 542 126.5
C 7 247 15031 114.52 538 542 126.5
C 3 233 11421 85.98 538 542 126.5
D 8 195 179732 1353.35 542 529 132.4
D 12 6 86865 652.02 542 529 132.4
D 7 238 47259 352.91 542 529 132.4

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