ASTROSAT CZTI

Data Quality Report

Orbit 29961

Creation date: 2024-06-27T20:09:13.428339
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/AS1A10_058T01_9000004298_29961cztM0_level2.evt modeM0/AS1A10_058T01_9000004298_29961cztM0_level2_quad_clean.evt
Size (bytes)699,592,32094,553,280
Size667.2 MB 90.2 MB
Events in quadrant A3,280,143644,333
Events in quadrant B7,377,187590,140
Events in quadrant C6,538,563598,804
Events in quadrant D3,585,543609,479

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0134501
B0259495
C0237571
D0144241

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A60181091.811233%
B6017115419.178993%
C601779513.212564%
D6017911.512382%

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 7203 6019 47 47 0.65% 0.78%
B 7202 6018 798 798 11.08% 13.26%
C 7202 6018 361 361 5.01% 6.00%
D 7202 6018 38 38 0.53% 0.63%

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 12 96 226833 1455.14 786 768 155.4
A 8 192 13511 82.02 786 768 155.4
A 13 254 11477 68.93 786 768 155.4
B 6 36 2856877 20783.01 731 712 137.4
B 6 159 1636321 11901.58 731 712 137.4
B 12 111 15988 111.16 731 712 137.4
C 3 233 3310722 19413.86 736 742 170.5
C 15 208 213284 1246.61 736 742 170.5
C 14 238 118548 690.96 736 742 170.5
D 7 80 346574 1904.3 774 754 181.6
D 8 195 251688 1381.8 774 754 181.6
D 12 233 24428 130.36 774 754 181.6

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