ASTROSAT CZTI

Data Quality Report

Orbit 40787

Creation date: 2024-06-27T22:20:29.616089
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/AS1A12_095T02_9000005568_40787cztM0_level2.fits modeM0/AS1A12_095T02_9000005568_40787cztM0_level2_quad_clean.evt
Size (bytes)661,800,960173,191,680
Size631.1 MB 165.2 MB
Events in quadrant A5,990,1561,163,618
Events in quadrant B5,308,2961,190,182
Events in quadrant C5,616,4841,129,286
Events in quadrant D6,744,9621,012,870

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0245634
B0230163
C0236543
D0277123

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A10799520.481526%
B10799930.861191%
C107991561.444578%
D107994103.796648%

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 13573 10799 33 33 0.24% 0.31%
B 13573 10799 53 53 0.39% 0.49%
C 13573 10799 139 139 1.02% 1.29%
D 13573 10799 386 386 2.84% 3.57%

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 10 83 946807 3953.28 1175 1149 239.2
A 13 248 248096 1032.35 1175 1149 239.2
A 6 10 128418 532.04 1175 1149 239.2
B 5 255 295869 1304.66 1170 1134 225.9
B 0 230 154032 676.81 1170 1134 225.9
B 4 171 135747 595.87 1170 1134 225.9
C 15 214 459871 1715.43 1147 1151 267.4
C 14 254 459725 1714.88 1147 1151 267.4
C 0 10 224143 833.9 1147 1151 267.4
D 2 153 874354 3172.46 1129 1098 275.3
D 2 249 595536 2159.54 1129 1098 275.3
D 5 222 435813 1579.28 1129 1098 275.3

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