ASTROSAT CZTI

Data Quality Report

Orbit 15213

Creation date: 2024-06-27T17:05:23.263665
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/AS1T02_071T01_9000002246_15213cztM0_level2.evt modeM0/AS1T02_071T01_9000002246_15213cztM0_level2_quad_clean.evt
Size (bytes)520,453,440125,974,080
Size496.3 MB 120.1 MB
Events in quadrant A3,302,639858,803
Events in quadrant B3,891,674866,176
Events in quadrant C4,732,129846,704
Events in quadrant D3,422,205817,956

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0250

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0137313
B0154502
C0183832
D0142962

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6100180.295082%
B61002353.852459%
C61002173.557377%
D6100781.278689%

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 7481 6102 1 1 0.01% 0.02%
B 7481 6102 155 155 2.07% 2.54%
C 7481 6102 153 153 2.05% 2.51%
D 7481 6102 73 73 0.98% 1.20%

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 0 253 227729 1522.67 749 736 149.1
A 12 189 178385 1191.67 749 736 149.1
A 9 143 10168 63.27 749 736 149.1
B 3 112 705403 5137.3 748 729 137.2
B 3 64 65494 472.16 748 729 137.2
B 10 245 58543 421.48 748 729 137.2
C 3 233 1346105 8123.61 730 736 165.6
C 4 254 501865 3025.92 730 736 165.6
C 7 247 14495 83.08 730 736 165.6
D 2 33 299900 1714.13 728 709 174.5
D 12 0 168777 962.9 728 709 174.5
D 13 172 46009 259.53 728 709 174.5

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