ASTROSAT CZTI

Data Quality Report

Orbit 12204

Creation date: 2024-06-27T16:23:47.871088
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/AS1A04_066T01_9000001802_12204cztM0_level2.evt modeM0/AS1A04_066T01_9000001802_12204cztM0_level2_quad_clean.evt
Size (bytes)572,688,000123,356,160
Size546.2 MB 117.6 MB
Events in quadrant A3,813,354848,282
Events in quadrant B5,531,116790,784
Events in quadrant C3,432,006829,077
Events in quadrant D4,113,930801,260

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0159072
B0209401
C0149521
D0168101

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A66951402.091113%
B669581412.158327%
C66951432.135922%
D66952063.076923%

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 7551 6697 8 8 0.11% 0.12%
B 7551 6697 441 441 5.84% 6.59%
C 7551 6697 109 109 1.44% 1.63%
D 7551 6697 130 130 1.72% 1.94%

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 256438 1638.91 777 761 156.0
A 1 178 148180 944.97 777 761 156.0
A 1 161 127051 809.53 777 761 156.0
B 4 239 1610865 11732.19 731 713 137.2
B 3 64 354592 2578.5 731 713 137.2
B 15 204 213019 1546.94 731 713 137.2
C 15 208 462529 2708.59 739 740 170.5
C 5 112 59997 347.57 739 740 170.5
C 4 175 16545 92.7 739 740 170.5
D 13 104 415971 2330.88 740 717 178.2
D 4 95 214883 1202.15 740 717 178.2
D 13 249 153646 858.41 740 717 178.2

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