ASTROSAT CZTI

Data Quality Report

Orbit 01076

Creation date: 2024-06-27T14:07:04.805681
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_998T02_9000000190_01076cztM0_level2.evt modeM0/AS1P01_998T02_9000000190_01076cztM0_level2_quad_clean.evt
Size (bytes)1,231,966,080123,079,680
Size1.1 GB 117.4 MB
Events in quadrant A8,773,635827,975
Events in quadrant B9,340,353830,640
Events in quadrant C9,036,028803,586
Events in quadrant D9,668,359748,385

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0313061
B0330361
C0320981
D0341091

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01520
B01520
C01520
D01520

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A020
B020
C020
D020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A742420.026940%
B7424460.619612%
C742450.067349%
D74245867.893319%

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 7669 7424 223 223 2.91% 3.00%
B 7669 7424 378 378 4.93% 5.09%
C 7669 7424 252 252 3.29% 3.39%
D 7668 7423 894 894 11.66% 12.04%

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 13 34 53180 93.45 2269 2283 544.7
A 0 253 10022 14.21 2269 2283 544.7
A 11 79 9782 13.77 2269 2283 544.7
B 5 191 201729 355.66 2364 2371 560.5
B 15 22 68369 117.74 2364 2371 560.5
B 4 172 43313 73.04 2364 2371 560.5
C 15 241 384155 629.12 2176 2252 607.0
C 3 79 46541 72.96 2176 2252 607.0
C 3 111 39437 61.26 2176 2252 607.0
D 2 216 275224 432.43 2095 2136 631.5
D 10 125 119344 185.6 2095 2136 631.5
D 9 64 82017 126.49 2095 2136 631.5

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