ASTROSAT CZTI

Data Quality Report

Orbit 59010

Creation date: 2026-08-24T16:25:26.770609
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_004T02_9000006600_59010cztM0_level2.fits modeM0/AS1A14_004T02_9000006600_59010cztM0_level2_quad_clean.evt
Size (bytes)730,805,76098,784,000
Size697.0 MB 94.2 MB
Events in quadrant A5,477,872658,448
Events in quadrant B4,099,575740,857
Events in quadrant C7,980,223544,810
Events in quadrant D8,926,432535,901

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0213021
B0171511
C0287357
D0315651

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01500
B01500
C01500
D01500

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A73347239.858195%
B73343414.649577%
C7334154221.025361%
D7334135218.434688%

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 7664 7334 396 396 5.17% 5.40%
B 7664 7334 116 116 1.51% 1.58%
C 7663 7333 1379 1379 18.00% 18.81%
D 7664 7334 1228 1228 16.02% 16.74%

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 14 1274366 6392.03 807 786 199.2
A 10 251 570791 2860.82 807 786 199.2
A 10 248 243696 1219.15 807 786 199.2
B 2 249 247996 1432.64 811 783 172.6
B 4 236 201879 1165.38 811 783 172.6
B 8 234 128910 742.52 811 783 172.6
C 15 219 4443737 22305.89 727 724 199.2
C 12 252 276560 1384.82 727 724 199.2
C 14 254 144214 720.38 727 724 199.2
D 12 110 5305225 24556.88 759 722 216.0
D 2 120 251849 1162.58 759 722 216.0
D 11 129 97075 446.06 759 722 216.0

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

TCT plots

Parameter TCT0 TCT_healed
Tct