ASTROSAT CZTI

Data Quality Report

Orbit 26689

Creation date: 2024-06-27T19:31:48.500838
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/AS1A09_145T01_9000003848_26689cztM0_level2.evt modeM0/AS1A09_145T01_9000003848_26689cztM0_level2_quad_clean.evt
Size (bytes)516,640,32084,381,120
Size492.7 MB 80.5 MB
Events in quadrant A3,083,080562,570
Events in quadrant B2,873,879572,115
Events in quadrant C3,847,459533,761
Events in quadrant D5,458,498490,653

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0125220
B0119360
C0152610
D0200410

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0120
B0120
C0120
D0120

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5665530.935569%
B5666440.776562%
C56661372.417932%
D56665319.371691%

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 6825 5666 10 10 0.15% 0.18%
B 6826 5667 1 1 0.01% 0.02%
C 6826 5667 32 32 0.47% 0.56%
D 6825 5666 430 430 6.30% 7.59%

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 0 13 239374 1627.6 735 724 146.6
A 15 174 10798 68.7 735 724 146.6
A 13 254 9641 60.81 735 724 146.6
B 14 207 18878 131.33 729 714 138.3
B 12 111 15962 110.25 729 714 138.3
B 11 111 14196 97.48 729 714 138.3
C 1 0 977938 5998.84 695 702 162.9
C 14 238 113423 691.95 695 702 162.9
C 15 208 22477 133.67 695 702 162.9
D 1 52 1514625 8263.56 674 661 183.2
D 7 80 1252006 6830.12 674 661 183.2
D 2 250 83633 452.88 674 661 183.2

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