ASTROSAT CZTI

Data Quality Report

Orbit 53577

Creation date: 2025-08-24T03:12:20.767533
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/AS1A14_004T05_9000006502_53577cztM0_level2.fits modeM0/AS1A14_004T05_9000006502_53577cztM0_level2_quad_clean.evt
Size (bytes)1,350,639,36070,372,800
Size1.3 GB 67.1 MB
Events in quadrant A11,366,378446,870
Events in quadrant B9,830,382561,068
Events in quadrant C11,544,775439,346
Events in quadrant D16,658,670144,476

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0391740
B0345802
C0396310
D0547940

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7741337243.560264%
B7741242331.300866%
C7741308239.813978%
D7741629781.346079%

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 7741 7739 2389 2389 30.86% 30.87%
B 7741 7740 1663 1663 21.48% 21.49%
C 7741 7741 2477 2477 32.00% 32.00%
D 7741 7739 4840 4840 62.52% 62.54%

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 3 63 5164051 31970.21 640 624 161.5
A 3 62 1622636 10042.96 640 624 161.5
A 4 239 782475 4840.96 640 624 161.5
B 5 172 2865106 19339.42 692 669 148.1
B 4 206 1948571 13151.38 692 669 148.1
B 10 28 794314 5358.34 692 669 148.1
C 15 224 5033566 30053.25 605 600 167.5
C 1 241 1924505 11488.18 605 600 167.5
C 15 157 534259 3186.63 605 600 167.5
D 8 176 14385995 153617.19 318 303 93.6
D 2 16 323587 3452.17 318 303 93.6
D 13 153 167691 1787.44 318 303 93.6

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