ASTROSAT CZTI

Data Quality Report

Orbit 23140

Creation date: 2024-06-27T18:50:23.767900
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/AS1T03_173T01_9000003416_23140cztM0_level2.evt modeM0/AS1T03_173T01_9000003416_23140cztM0_level2_quad_clean.evt
Size (bytes)459,803,52092,128,320
Size438.5 MB 87.9 MB
Events in quadrant A3,261,738590,553
Events in quadrant B3,295,105596,296
Events in quadrant C3,470,682564,557
Events in quadrant D3,434,528563,801

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0141012
B0141392
C0146252
D0148292

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6813500.733891%
B6814650.953918%
C68141462.142647%
D6814771.130026%

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 7818 6813 0 0 0.00% 0.00%
B 7819 6814 0 0 0.00% 0.00%
C 7819 6814 28 28 0.36% 0.41%
D 7819 6814 23 23 0.29% 0.34%

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 16 33269 193.04 837 819 168.1
A 13 254 10340 56.64 837 819 168.1
A 0 226 7385 39.06 837 819 168.1
B 12 111 18778 112.72 831 806 159.4
B 0 189 17496 104.68 831 806 159.4
B 11 111 16781 100.19 831 806 159.4
C 14 238 127047 678.16 796 801 186.2
C 0 10 124099 662.32 796 801 186.2
C 7 247 61429 325.68 796 801 186.2
D 12 233 111124 560.16 811 785 197.0
D 1 52 94628 476.42 811 785 197.0
D 13 153 40121 199.7 811 785 197.0

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