ASTROSAT CZTI

Data Quality Report

Orbit 20170612_A03_051T01_9000001288_level2

Creation date: 2025-11-14T11:04:03.485276
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/AS1A03_051T01_9000001288cztM0_level2.fits modeM0/AS1A03_051T01_9000001288cztM0_level2_quad_clean.evt
Size (bytes)630,313,920556,974,720
Size601.1 MB 531.2 MB
Events in quadrant A3,742,3963,166,283
Events in quadrant B3,680,6063,171,747
Events in quadrant C3,774,7593,054,285
Events in quadrant D3,253,7022,839,820

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A013840
B014000
C013790
D013750

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01674190
B01496700
C01383990
D01489640

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01120
B01120
C01100
D01120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6735818702.776211%
B6745613872.056155%
C677344930.727847%
D675628961.326189%

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 82363 68912 0 0 0.00% 0.00%
B 82364 68910 0 0 0.00% 0.00%
C 82362 69186 0 0 0.00% 0.00%
D 82364 69009 0 0 0.00% 0.00%

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 29 3817 11.84 973 910 245.6
A 7 110 3089 8.87 973 910 245.6
A 0 30 2887 8.05 973 910 245.6
B 2 9 3163 11.59 970 922 193.3
B 3 17 2530 8.32 970 922 193.3
B 5 128 2490 8.11 970 922 193.3
C 1 80 2756 6.98 996 921 262.8
C 1 81 2690 6.73 996 921 262.8
C 12 241 2658 6.61 996 921 262.8
D 6 231 2451 6.42 926 841 250.6
D 3 14 2372 6.11 926 841 250.6
D 7 5 2357 6.05 926 841 250.6

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