ASTROSAT CZTI

Data Quality Report

Orbit 29743

Creation date: 2024-06-27T20:07:19.912242
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/AS1A10_007T01_9000004276_29743cztM0_level2.evt modeM0/AS1A10_007T01_9000004276_29743cztM0_level2_quad_clean.evt
Size (bytes)2,300,230,080296,521,920
Size2.1 GB 282.8 MB
Events in quadrant A12,946,6991,840,017
Events in quadrant B20,140,6401,851,004
Events in quadrant C15,853,6831,801,285
Events in quadrant D19,017,1511,743,566

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05140
B05140
C05140
D05140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0543495
B0775225
C0630735
D0737925

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0420
B0420
C0420
D0420

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A253722961.166640%
B253735021.978481%
C253729573.771875%
D253727562.979663%

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 29417 25372 9 9 0.03% 0.04%
B 29418 25374 37 37 0.13% 0.15%
C 29417 25373 297 297 1.01% 1.17%
D 29417 25372 531 531 1.81% 2.09%

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 12 16 578530 911.91 3175 3108 631.0
A 12 194 109954 169.33 3175 3108 631.0
A 13 254 49822 74.03 3175 3108 631.0
B 6 159 7221048 12054.9 3135 3049 598.8
B 0 229 268277 442.96 3135 3049 598.8
B 5 255 129402 211.02 3135 3049 598.8
C 3 233 2500118 3531.92 3044 3070 707.0
C 10 22 777247 1095.03 3044 3070 707.0
C 14 238 490475 689.4 3044 3070 707.0
D 8 195 5195592 7138.13 3065 2986 727.4
D 7 80 1541653 2115.16 3065 2986 727.4
D 12 227 192694 260.79 3065 2986 727.4

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