ASTROSAT CZTI

Data Quality Report

Orbit 39469

Creation date: 2024-06-27T22:04:57.442971
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_044T05_9000005480_39469cztM0_level2.fits modeM0/AS1A12_044T05_9000005480_39469cztM0_level2_quad_clean.evt
Size (bytes)829,719,360169,934,400
Size791.3 MB 162.1 MB
Events in quadrant A7,564,5391,143,247
Events in quadrant B5,227,9001,209,947
Events in quadrant C9,351,5671,053,690
Events in quadrant D7,733,051990,139

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0310
B0310
C0310
D0320

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02200
B02200
C02200
D02200

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0292004
B0227443
C0347293
D0305483

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A108044574.229915%
B10804630.583117%
C1080410649.848204%
D108047667.089967%

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 13580 10806 320 320 2.36% 2.96%
B 13580 10806 26 26 0.19% 0.24%
C 13580 10806 805 805 5.93% 7.45%
D 13580 10806 603 603 4.44% 5.58%

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 15 222 1760433 7298.99 1193 1169 241.0
A 10 83 802607 3325.08 1193 1169 241.0
A 15 174 284980 1177.5 1193 1169 241.0
B 5 255 261028 1124.11 1197 1163 231.2
B 8 3 167332 718.8 1197 1163 231.2
B 12 111 30067 125.03 1197 1163 231.2
C 15 208 4430432 16797.3 1132 1140 263.7
C 15 214 437627 1655.3 1132 1140 263.7
C 9 187 53500 198.57 1132 1140 263.7
D 12 0 1854377 6631.75 1145 1111 279.5
D 13 249 472213 1685.8 1145 1111 279.5
D 2 249 341788 1219.08 1145 1111 279.5

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