ASTROSAT CZTI

Data Quality Report

Orbit 52452

Creation date: 2025-06-27T18:20:45.295152
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/AS1A13_037T01_9000006476_52452cztM0_level2.fits modeM0/AS1A13_037T01_9000006476_52452cztM0_level2_quad_clean.evt
Size (bytes)757,762,56085,040,640
Size722.7 MB 81.1 MB
Events in quadrant A3,045,037645,296
Events in quadrant B3,281,287692,012
Events in quadrant C10,123,753396,830
Events in quadrant D11,099,084389,693

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0138732
B0144712
C0345872
D0375232

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6467410.633988%
B6468620.958565%
C6468251138.821892%
D6468247938.327149%

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 7627 6468 17 17 0.22% 0.26%
B 7628 6469 20 20 0.26% 0.31%
C 7628 6468 2202 2202 28.87% 34.04%
D 7628 6468 2685 2685 35.20% 41.51%

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 13 248 69523 403.28 688 672 170.7
A 10 253 51803 299.49 688 672 170.7
A 12 17 48769 281.72 688 672 170.7
B 4 81 141722 957.3 686 659 147.4
B 0 213 138241 933.68 686 659 147.4
B 4 171 58605 393.24 686 659 147.4
C 15 224 4906987 32692.61 538 533 150.1
C 1 45 1056169 7033.9 538 533 150.1
C 15 248 826410 5502.97 538 533 150.1
D 6 42 5103877 31521.76 561 534 161.9
D 12 17 1271811 7852.28 561 534 161.9
D 15 93 875771 5406.07 561 534 161.9

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