ASTROSAT CZTI

Data Quality Report

Orbit 15788

Creation date: 2024-06-27T17:13:24.262761
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/AS1A04_100T01_9000002336_15788cztM0_level2.evt modeM0/AS1A04_100T01_9000002336_15788cztM0_level2_quad_clean.evt
Size (bytes)413,519,04069,563,520
Size394.4 MB 66.3 MB
Events in quadrant A2,847,891421,070
Events in quadrant B3,319,937427,316
Events in quadrant C2,955,037424,815
Events in quadrant D2,993,458414,911

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01220
B01220
C01220
D01220

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0124922
B0139501
C0126801
D0129621

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0110

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A5985370.618212%
B5985741.236424%
C5985741.236424%
D5985320.534670%

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 7096 5987 0 0 0.00% 0.00%
B 7096 5987 13 13 0.18% 0.22%
C 7096 5987 0 0 0.00% 0.00%
D 7096 5987 7 7 0.10% 0.12%

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 0 226 6757 40.11 739 724 150.4
A 15 239 6742 40.01 739 724 150.4
A 12 194 5561 32.15 739 724 150.4
B 7 220 99907 709.69 742 724 139.8
B 4 173 88985 631.54 742 724 139.8
B 5 65 55395 391.19 742 724 139.8
C 14 238 111082 659.66 718 724 167.3
C 10 22 29418 171.52 718 724 167.3
C 3 233 6953 37.23 718 724 167.3
D 1 52 91557 510.6 726 705 177.9
D 2 152 58677 325.81 726 705 177.9
D 2 234 25409 138.84 726 705 177.9

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