ASTROSAT CZTI

Data Quality Report

Orbit 49867

Creation date: 2024-12-17T05:52:36.846653
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/AS1A13_037T01_9000006440_49867cztM0_level2.fits modeM0/AS1A13_037T01_9000006440_49867cztM0_level2_quad_clean.evt
Size (bytes)1,067,065,92044,015,040
Size1017.6 MB 42.0 MB
Events in quadrant A12,083,859278,014
Events in quadrant B4,263,489616,728
Events in quadrant C9,865,5824,187
Events in quadrant D12,807,4502,516

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01260
B01260
C01260
D01260

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0401031
B0168741
C0336383
D0422701

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6171374460.670880%
B61714226.838438%
C6171614399.546265%
D6171615799.773132%

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 7286 6171 3337 3337 45.80% 54.08%
B 7286 6171 311 311 4.27% 5.04%
C 7285 6170 1982 1982 27.21% 32.12%
D 7285 6170 3795 3795 52.09% 61.51%

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 4 4 7941075 68372.79 461 450 116.1
A 8 8 719161 6188.46 461 450 116.1
A 8 62 497592 4280.64 461 450 116.1
B 4 206 590756 4174.4 655 632 141.4
B 5 172 361384 2551.88 655 632 141.4
B 0 229 131797 927.83 655 632 141.4
C 4 111 4725525 126840.38 81 78 37.3
C 15 230 2034870 54617.86 81 78 37.3
C 15 196 525234 14096.23 81 78 37.3
D 7 61 7298942 189046.91 103 98 38.6
D 8 129 2545626 65931.56 103 98 38.6
D 15 185 1008836 26127.26 103 98 38.6

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