ASTROSAT CZTI

Data Quality Report

Orbit 20211202_A11_046T04_9000004792_level2

Creation date: 2025-12-30T16:31:53.676459
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/AS1A11_046T04_9000004792cztM0_level2.fits modeM0/AS1A11_046T04_9000004792cztM0_level2_quad_clean.evt
Size (bytes)692,354,880882,616,320
Size660.3 MB 841.7 MB
Events in quadrant A4,309,3565,867,592
Events in quadrant B3,964,7365,530,177
Events in quadrant C4,150,4585,518,516
Events in quadrant D3,435,5544,711,842

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01549670
B02059040
C01615280
D02762290

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02950
B02950
C02950
D02950

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A015220
B015220
C015220
D015220

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A74438790.106129%
B7443849746.682071%
C744385900.792606%
D7443858037.795749%

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 103923 74438 0 0 0.00% 0.00%
B 103923 74370 0 0 0.00% 0.00%
C 103923 74434 0 0 0.00% 0.00%
D 103923 74397 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 9 19 3582 9.07 1125 1064 277.5
A 0 29 3545 8.94 1125 1064 277.5
A 7 110 3537 8.91 1125 1064 277.5
B 2 9 3411 11.58 1054 1011 207.3
B 3 80 3098 10.07 1054 1011 207.3
B 2 8 2769 8.48 1054 1011 207.3
C 3 202 3225 7.86 1098 1032 279.0
C 3 203 3176 7.68 1098 1032 279.0
C 3 187 2791 6.3 1098 1032 279.0
D 4 160 2500 6.06 984 899 264.2
D 6 38 2484 6.0 984 899 264.2
D 6 231 2481 5.99 984 899 264.2

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