ASTROSAT CZTI

Data Quality Report

Orbit 09942

Creation date: 2024-06-27T15:52:43.269213
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/AS1G07_016T01_9000001420_09942cztM0_level2.evt modeM0/AS1G07_016T01_9000001420_09942cztM0_level2_quad_clean.evt
Size (bytes)434,908,80084,545,280
Size414.8 MB 80.6 MB
Events in quadrant A2,927,726548,967
Events in quadrant B3,068,763555,121
Events in quadrant C2,726,117547,634
Events in quadrant D4,047,250496,063

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01286
B01282
C01286
D01286

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013358840
B013762816
C012830681
D0172011269

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0170
B0171
C0171
D0180

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5889400.679232%
B5905681.151566%
C5925290.489451%
D58291502.573340%

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 7515 6164 4 4 0.05% 0.06%
B 7518 6170 8 8 0.11% 0.13%
C 7515 6186 0 0 0.00% 0.00%
D 7518 6157 139 139 1.85% 2.26%

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 15 174 67330 455.69 721 708 146.2
A 8 15 50113 337.93 721 708 146.2
A 15 239 23618 156.7 721 708 146.2
B 4 239 63258 452.52 728 711 138.2
B 6 51 47903 341.43 728 711 138.2
B 4 81 36157 256.45 728 711 138.2
C 13 61 5439 29.49 696 701 160.7
C 10 22 3818 19.4 696 701 160.7
C 8 222 2869 13.49 696 701 160.7
D 2 16 432975 2426.17 672 653 178.2
D 12 233 350396 1962.74 672 653 178.2
D 8 195 255299 1429.06 672 653 178.2

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