ASTROSAT CZTI

Data Quality Report

Orbit 21786

Creation date: 2024-06-27T18:32:11.713145
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/AS1A07_006T01_9000003226_21786cztM0_level2.evt modeM0/AS1A07_006T01_9000003226_21786cztM0_level2_quad_clean.evt
Size (bytes)581,664,96073,376,640
Size554.7 MB 70.0 MB
Events in quadrant A3,329,517445,629
Events in quadrant B3,607,800454,353
Events in quadrant C3,351,896441,653
Events in quadrant D6,871,031411,385

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01360
B01360
C01360
D01360

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138812
B0146372
C0138452
D0250012

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6724250.371802%
B6724751.115407%
C6724550.817965%
D672495714.232600%

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 7864 6725 0 0 0.00% 0.00%
B 7864 6725 28 28 0.36% 0.42%
C 7864 6725 0 0 0.00% 0.00%
D 7864 6725 995 995 12.65% 14.80%

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 13 252 33965 193.77 852 834 171.0
A 13 254 12789 69.92 852 834 171.0
A 5 16 8051 42.21 852 834 171.0
B 3 64 86549 529.89 858 838 161.8
B 0 190 35062 211.58 858 838 161.8
B 0 230 26813 160.59 858 838 161.8
C 14 238 131745 686.67 824 830 190.7
C 0 10 6642 30.48 824 830 190.7
C 13 61 5928 26.74 824 830 190.7
D 7 238 3010548 15564.9 802 780 193.4
D 1 52 570988 2948.81 802 780 193.4
D 13 153 111654 573.38 802 780 193.4

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