ASTROSAT CZTI

Data Quality Report

Orbit 57707

Creation date: 2026-05-29T01:39:05.737151
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_125T09_9000006578_57707cztM0_level2.fits modeM0/AS1A14_125T09_9000006578_57707cztM0_level2_quad_clean.evt
Size (bytes)1,194,246,720267,324,480
Size1.1 GB 254.9 MB
Events in quadrant A8,305,7881,787,640
Events in quadrant B10,366,5981,799,696
Events in quadrant C13,267,0631,628,632
Events in quadrant D10,811,8081,582,820

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03800
B03800
C03800
D03800

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0387883
B0438593
C0525795
D0452213

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A187971740.925680%
B187987564.021704%
C1879710495.580678%
D187974792.548279%

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 19872 18801 28 28 0.14% 0.15%
B 19873 18802 289 289 1.45% 1.54%
C 19872 18801 816 816 4.11% 4.34%
D 19872 18801 358 358 1.80% 1.90%

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 79 150223 294.41 2052 1996 503.5
A 3 128 73330 141.69 2052 1996 503.5
A 13 248 70911 136.88 2052 1996 503.5
B 4 80 744375 1731.35 2001 1922 428.8
B 10 16 363636 843.49 2001 1922 428.8
B 10 247 208104 480.8 2001 1922 428.8
C 15 224 3821206 7277.96 1937 1918 524.8
C 12 249 482514 915.81 1937 1918 524.8
C 12 254 291281 551.4 1937 1918 524.8
D 2 249 1046358 1892.95 1964 1877 551.8
D 8 240 447965 808.46 1964 1877 551.8
D 3 224 347883 627.08 1964 1877 551.8

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