ASTROSAT CZTI

Data Quality Report

Orbit 56283

Creation date: 2026-02-24T00:01:01.706024
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_049T01_9000006552_56283cztM0_level2.fits modeM0/AS1A14_049T01_9000006552_56283cztM0_level2_quad_clean.evt
Size (bytes)2,155,861,440178,289,280
Size2.0 GB 170.0 MB
Events in quadrant A34,635,672607,249
Events in quadrant B12,753,8391,322,756
Events in quadrant C16,844,5761,063,588
Events in quadrant D14,131,2201,118,988

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03780
B03780
C03780
D03780

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0140
C0140
D0140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01160763
B0512243
C0634183
D0550523

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A186301090758.545357%
B1863013887.450349%
C18630350118.792271%
D1863113177.068864%

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 20302 18764 10072 10072 49.61% 53.68%
B 20303 18916 1147 1147 5.65% 6.06%
C 20303 18915 2930 2930 14.43% 15.49%
D 20304 18916 1298 1298 6.39% 6.86%

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 15 32 18502841 58452.3 1251 1220 316.5
A 8 176 7542420 23824.97 1251 1220 316.5
A 0 8 913324 2881.62 1251 1220 316.5
B 4 206 3247213 8159.81 1874 1807 397.7
B 5 185 673513 1688.85 1874 1807 397.7
B 0 171 195254 486.38 1874 1807 397.7
C 12 254 5817645 12643.26 1670 1655 460.0
C 5 250 2399941 5213.58 1670 1655 460.0
C 12 252 655890 1422.23 1670 1655 460.0
D 2 249 2187124 4270.91 1798 1718 511.7
D 11 129 1647322 3215.98 1798 1718 511.7
D 5 32 785214 1531.17 1798 1718 511.7

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