ASTROSAT CZTI

Data Quality Report

Orbit 00656

Creation date: 2024-06-27T14:01:06.127281
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/AS1P01_126T04_9000000092_00656cztM0_level2.evt modeM0/AS1P01_126T04_9000000092_00656cztM0_level2_quad_clean.evt
Size (bytes)368,406,72024,526,080
Size351.3 MB 23.4 MB
Events in quadrant A2,910,197142,829
Events in quadrant B2,883,867145,766
Events in quadrant C2,529,739147,997
Events in quadrant D2,681,258142,460

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0102501
B0101651
C091201
D095481

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0100

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2254100.443656%
B225470.310559%
C2254110.488021%
D225420.088731%

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 2254 2254 89 89 3.95% 3.95%
B 2254 2254 62 62 2.75% 2.75%
C 2254 2254 42 42 1.86% 1.86%
D 2254 2254 32 32 1.42% 1.42%

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 69 60001 358.97 727 721 165.1
A 13 17 16452 95.26 727 721 165.1
A 0 238 6558 35.35 727 721 165.1
B 7 221 172867 1005.72 697 705 171.2
B 15 82 17119 95.89 697 705 171.2
B 0 220 9952 54.02 697 705 171.2
C 10 117 69357 387.66 622 644 177.3
C 9 52 9390 49.34 622 644 177.3
C 15 241 4615 22.4 622 644 177.3
D 13 216 140993 705.06 626 651 199.1
D 13 173 27749 136.14 626 651 199.1
D 1 4 22876 111.66 626 651 199.1

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