ASTROSAT CZTI

Data Quality Report

Orbit 17703

Creation date: 2024-06-27T17:39:47.521021
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_040T01_9000002628_17703cztM0_level2.evt modeM0/AS1T03_040T01_9000002628_17703cztM0_level2_quad_clean.evt
Size (bytes)480,352,32095,155,200
Size458.1 MB 90.7 MB
Events in quadrant A3,126,035621,299
Events in quadrant B3,369,304637,892
Events in quadrant C3,223,548604,654
Events in quadrant D4,381,193558,378

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01340
B01340
C01340
D01340

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135912
B0142722
C0137622
D0175042

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0200
B0210
C0210
D0210

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6584330.501215%
B6584711.078372%
C6584691.047995%
D65844366.622114%

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 7849 6585 0 0 0.00% 0.00%
B 7849 6585 4 4 0.05% 0.06%
C 7849 6585 0 0 0.00% 0.00%
D 7849 6585 408 408 5.20% 6.20%

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 0 226 7197 39.53 812 798 161.9
A 12 194 6213 33.45 812 798 161.9
A 3 137 5788 30.83 812 798 161.9
B 10 245 142999 925.24 814 795 153.7
B 0 189 27784 175.6 814 795 153.7
B 12 111 17923 111.44 814 795 153.7
C 14 238 122489 680.68 775 780 178.8
C 5 218 34627 189.3 775 780 178.8
C 3 233 30017 163.51 775 780 178.8
D 7 238 1387406 7528.15 761 740 184.2
D 11 241 26028 137.29 761 740 184.2
D 13 232 24953 131.45 761 740 184.2

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