ASTROSAT CZTI

Data Quality Report

Orbit 53878

Creation date: 2025-09-13T09:11:05.413243
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_057T04_9000006508_53878cztM0_level2.fits modeM0/AS1A14_057T04_9000006508_53878cztM0_level2_quad_clean.evt
Size (bytes)1,403,127,360144,653,760
Size1.3 GB 138.0 MB
Events in quadrant A8,204,5011,056,919
Events in quadrant B6,583,3961,203,781
Events in quadrant C13,633,889848,632
Events in quadrant D22,633,395478,123

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0324392
B0272792
C0484132
D0750602

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02320
B02320
C02320
D02320

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A114508877.746725%
B114503122.724891%
C11450273823.912664%
D11450667658.305677%

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 13750 11452 559 559 4.07% 4.88%
B 13750 11452 56 56 0.41% 0.49%
C 13750 11451 2141 2141 15.57% 18.70%
D 13750 11451 5915 5915 43.02% 51.65%

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 15 174 1923138 6294.37 1230 1198 305.3
A 12 115 1024403 3351.0 1230 1198 305.3
A 3 62 183038 595.53 1230 1198 305.3
B 7 0 548244 2028.55 1267 1225 269.7
B 5 185 247749 914.2 1267 1225 269.7
B 0 213 150629 554.04 1267 1225 269.7
C 15 224 3665992 12257.11 1093 1088 299.0
C 15 158 1903210 6361.56 1093 1088 299.0
C 1 241 1542941 5156.66 1093 1088 299.0
D 8 176 17146254 68978.04 868 828 248.6
D 2 172 1251765 5032.66 868 828 248.6
D 13 153 252643 1013.08 868 828 248.6

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