ASTROSAT CZTI

Data Quality Report

Orbit 20260119_A14_127T10_9000006542_level2

Creation date: 2026-02-06T02:03:13.058535
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_127T10_9000006542cztM0_level2.fits modeM0/AS1A14_127T10_9000006542cztM0_level2_quad_clean.evt
Size (bytes)3,011,063,0401,406,283,840
Size2.8 GB 1.3 GB
Events in quadrant A17,059,8684,088,852
Events in quadrant B16,994,3684,960,243
Events in quadrant C17,681,0764,480,426
Events in quadrant D13,967,3003,600,341

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A012515820
B08324980
C08592950
D012660220

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04130
B04130
C04140
D04140

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A075020
B075020
C075020
D075020

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3736984506212.058400%
B37369995512.555800%
C37369993072.490507%
D3648204856713.312593%

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 420140 371880 0 0 0.00% 0.00%
B 420141 373163 0 0 0.00% 0.00%
C 420141 373158 0 0 0.00% 0.00%
D 420140 362250 0 0 0.00% 0.00%

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 14 188 18894 9.83 4464 4096 1505.9
A 9 255 17107 8.64 4464 4096 1505.9
A 14 204 15154 7.34 4464 4096 1505.9
B 2 9 19687 14.59 4484 4228 1059.8
B 2 8 17642 12.66 4484 4228 1059.8
B 3 25 14179 9.39 4484 4228 1059.8
C 15 175 14974 6.44 4711 4262 1662.7
C 2 31 14340 6.06 4711 4262 1662.7
C 15 127 13944 5.82 4711 4262 1662.7
D 6 218 17862 10.56 3973 3509 1359.2
D 15 11 13459 7.32 3973 3509 1359.2
D 8 12 13011 6.99 3973 3509 1359.2

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