ASTROSAT CZTI

Data Quality Report

Orbit 50131

Creation date: 2025-01-04T11:56:34.805001
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/AS1C09_003T01_9000006442_50131cztM0_level2.fits modeM0/AS1C09_003T01_9000006442_50131cztM0_level2_quad_clean.evt
Size (bytes)1,151,239,68058,008,960
Size1.1 GB 55.3 MB
Events in quadrant A13,718,080238,225
Events in quadrant B3,746,473649,035
Events in quadrant C13,055,227159,409
Events in quadrant D11,617,791275,697

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0449895
B0153721
C0430101
D0387411

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6204418067.375887%
B62051732.788074%
C6205473076.228848%
D6205338854.601128%

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 7349 6205 4166 4166 56.69% 67.14%
B 7350 6206 106 106 1.44% 1.71%
C 7350 6205 3611 3611 49.13% 58.20%
D 7350 6205 3059 3059 41.62% 49.30%

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 6 250 6650267 53923.85 485 473 123.3
A 0 98 2059561 16697.35 485 473 123.3
A 4 207 917862 7439.2 485 473 123.3
B 2 176 237812 1740.62 642 622 136.3
B 4 170 198875 1454.88 642 622 136.3
B 5 185 125211 914.3 642 622 136.3
C 4 111 6999775 74085.74 326 324 94.5
C 15 197 749023 7924.61 326 324 94.5
C 15 147 709250 7503.63 326 324 94.5
D 15 106 1992276 14097.19 488 469 141.3
D 15 168 1668401 11804.93 488 469 141.3
D 12 6 1331542 9420.79 488 469 141.3

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