ASTROSAT CZTI

Data Quality Report

Orbit 00758

Creation date: 2024-06-27T14:02:33.805370
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/AS1P01_010T01_9000000108_00758cztM0_level2.evt modeM0/AS1P01_010T01_9000000108_00758cztM0_level2_quad_clean.evt
Size (bytes)1,303,945,920101,589,120
Size1.2 GB 96.9 MB
Events in quadrant A9,511,704648,747
Events in quadrant B9,809,150660,402
Events in quadrant C9,055,501648,618
Events in quadrant D10,628,773607,281

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0334850
B0343750
C0321560
D0369560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73412453.337420%
B73421872.546990%
C73421441.961318%
D734281811.141378%

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 7456 7343 565 565 7.58% 7.69%
B 7457 7344 528 528 7.08% 7.19%
C 7457 7344 423 423 5.67% 5.76%
D 7457 7344 1481 1481 19.86% 20.17%

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 15 233 368935 638.29 2355 2368 574.3
A 12 236 46805 77.38 2355 2368 574.3
A 0 117 32328 52.17 2355 2368 574.3
B 7 221 380308 646.73 2447 2451 584.3
B 8 38 101142 168.92 2447 2451 584.3
B 5 191 10747 14.2 2447 2451 584.3
C 8 208 68730 104.26 2260 2336 636.8
C 15 241 63973 96.79 2260 2336 636.8
C 3 111 40374 59.73 2260 2336 636.8
D 13 25 2368561 3541.63 2146 2223 668.1
D 1 4 83410 121.51 2146 2223 668.1
D 6 226 70091 101.58 2146 2223 668.1

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