ASTROSAT CZTI

Data Quality Report

Orbit 33958

Creation date: 2024-06-27T20:54:51.475501
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/AS1A11_058T01_9000004854_33958cztM0_level2.evt modeM0/AS1A11_058T01_9000004854_33958cztM0_level2_quad_clean.evt
Size (bytes)509,451,840105,969,600
Size485.9 MB 101.1 MB
Events in quadrant A2,558,867769,787
Events in quadrant B3,407,055758,403
Events in quadrant C2,866,899728,369
Events in quadrant D6,255,091599,926

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01020
B01020
C01020
D01020

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0290
B0290
C0290
D0300

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0104303
B0131062
C0112042
D0219972

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5027100.198926%
B50272214.396260%
C5027601.193555%
D5027136027.053909%

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 7059 5028 4 4 0.06% 0.08%
B 7059 5028 152 152 2.15% 3.02%
C 7059 5028 52 52 0.74% 1.03%
D 7059 5028 1170 1170 16.57% 23.27%

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 15 169 24235 184.39 650 639 128.0
A 10 83 14813 110.76 650 639 128.0
A 13 254 10400 76.28 650 639 128.0
B 5 172 839156 7146.23 630 615 117.3
B 3 112 30207 252.19 630 615 117.3
B 4 232 25925 215.7 630 615 117.3
C 15 214 223003 1620.37 607 613 137.2
C 0 10 210717 1530.85 607 613 137.2
C 3 233 44830 322.17 607 613 137.2
D 12 33 1821654 13719.27 538 521 132.7
D 8 195 908605 6840.93 538 521 132.7
D 2 250 728115 5481.24 538 521 132.7

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