ASTROSAT CZTI

Data Quality Report

Orbit 04142

Creation date: 2024-06-27T14:37:59.437274
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/AS1G05_240T01_9000000536_04142cztM0_level2.evt modeM0/AS1G05_240T01_9000000536_04142cztM0_level2_quad_clean.evt
Size (bytes)454,440,96070,084,800
Size433.4 MB 66.8 MB
Events in quadrant A3,301,956417,967
Events in quadrant B3,739,060416,964
Events in quadrant C3,057,525413,232
Events in quadrant D3,200,434398,442

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01380
B01380
C01380
D01380

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0110
B0110
C0110
D0120

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0145343
B0155792
C0139392
D0144662

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A68231101.612194%
B68231532.242415%
C6823470.688847%
D6823721.055254%

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 7617 6823 18 18 0.24% 0.26%
B 7618 6824 71 71 0.93% 1.04%
C 7618 6824 0 0 0.00% 0.00%
D 7618 6824 35 35 0.46% 0.51%

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 0 118 120510 731.04 797 778 163.8
A 14 111 69730 421.0 797 778 163.8
A 13 14 20068 117.78 797 778 163.8
B 10 16 474825 3020.66 804 786 156.9
B 15 204 74782 471.52 804 786 156.9
B 4 81 30478 189.2 804 786 156.9
C 10 65 16817 88.76 776 779 180.7
C 13 61 6545 31.91 776 779 180.7
C 12 4 4554 20.89 776 779 180.7
D 2 14 81826 428.88 773 749 189.0
D 2 232 62387 326.06 773 749 189.0
D 13 239 52080 271.53 773 749 189.0

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