ASTROSAT CZTI

Data Quality Report

Orbit 16571

Creation date: 2024-06-27T17:24:32.547775
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/AS1T03_018T01_9000002442_16571cztM0_level2.evt modeM0/AS1T03_018T01_9000002442_16571cztM0_level2_quad_clean.evt
Size (bytes)588,312,00086,492,160
Size561.1 MB 82.5 MB
Events in quadrant A3,677,302572,752
Events in quadrant B3,776,153602,053
Events in quadrant C4,634,741568,210
Events in quadrant D5,300,216434,312

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0149053
B0152662
C0182492
D0200002

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01280
B01280
C01280
D01280

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A63252383.762846%
B6325801.264822%
C63251412.229249%
D6325138621.913043%

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 7546 6327 162 162 2.15% 2.56%
B 7546 6327 15 15 0.20% 0.24%
C 7546 6327 2 2 0.03% 0.03%
D 7545 6325 563 563 7.46% 8.90%

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 506252 3150.77 791 775 160.4
A 11 29 93414 577.44 791 775 160.4
A 9 143 31602 192.15 791 775 160.4
B 15 35 282966 1856.55 808 791 152.0
B 7 220 110166 719.62 808 791 152.0
B 0 229 96498 629.7 808 791 152.0
C 3 233 1526234 8596.57 762 768 177.5
C 14 238 117561 658.17 762 768 177.5
C 7 247 18048 97.38 762 768 177.5
D 1 52 1588439 10140.17 634 616 156.6
D 10 70 532681 3397.88 634 616 156.6
D 2 33 345465 2202.28 634 616 156.6

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