ASTROSAT CZTI

Data Quality Report

Orbit 50596

Creation date: 2025-02-04T13:19:05.508636
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/AS1T05_239T01_9000006444_50596cztM0_level2.fits modeM0/AS1T05_239T01_9000006444_50596cztM0_level2_quad_clean.evt
Size (bytes)462,191,04079,447,680
Size440.8 MB 75.8 MB
Events in quadrant A3,000,194533,425
Events in quadrant B6,560,596499,556
Events in quadrant C3,650,870507,685
Events in quadrant D3,460,541471,875

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012971126
B023651243
C015152217
D014558146

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01162
B01160
C01164
D01162

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5627931.652746%
B5612105818.852459%
C56182694.788181%
D56212694.785625%

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 7384 5642 52 52 0.70% 0.92%
B 7384 5628 744 744 10.08% 13.22%
C 7384 5634 212 212 2.87% 3.76%
D 7385 5636 180 180 2.44% 3.19%

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 5 240 145355 983.04 591 578 147.3
A 4 3 141653 957.9 591 578 147.3
A 4 78 64190 431.93 591 578 147.3
B 4 170 2172343 18351.63 553 533 118.3
B 5 172 1241467 10485.8 553 533 118.3
B 0 229 272774 2300.42 553 533 118.3
C 15 147 477467 3079.28 559 553 154.9
C 13 3 187279 1205.63 559 553 154.9
C 4 5 158562 1020.21 559 553 154.9
D 7 126 328886 2117.96 555 533 155.0
D 7 191 173199 1113.74 555 533 155.0
D 2 249 169151 1087.63 555 533 155.0

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