ASTROSAT CZTI

Data Quality Report

Orbit 42832

Creation date: 2024-06-27T22:44:46.886957
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/AS1T05_138T01_9000005828_42832cztM0_level2.fits modeM0/AS1T05_138T01_9000005828_42832cztM0_level2_quad_clean.evt
Size (bytes)380,456,64092,208,960
Size362.8 MB 87.9 MB
Events in quadrant A3,653,089609,318
Events in quadrant B2,440,580627,021
Events in quadrant C2,977,333627,700
Events in quadrant D4,581,835540,323

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0144864
B0111572
C0122862
D0174842

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0190
B0200
C0200
D0200

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01140
B01140
C01140
D01140

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5533701.265136%
B553370.126514%
C5533460.831375%
D55334277.717332%

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 7236 5534 40 40 0.55% 0.72%
B 7236 5534 1 1 0.01% 0.02%
C 7236 5534 43 43 0.59% 0.78%
D 7236 5534 367 367 5.07% 6.63%

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 10 83 651706 5134.29 611 598 126.8
A 15 222 361823 2848.43 611 598 126.8
A 12 189 240067 1888.32 611 598 126.8
B 0 245 16310 133.82 607 591 117.5
B 12 111 14712 120.21 607 591 117.5
B 11 111 13243 107.71 607 591 117.5
C 14 254 304326 2127.14 599 603 142.8
C 15 214 228610 1596.86 599 603 142.8
C 3 233 77986 541.96 599 603 142.8
D 1 52 1286793 8937.58 581 565 143.9
D 10 118 377423 2618.66 581 565 143.9
D 12 233 193219 1338.69 581 565 143.9

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