ASTROSAT CZTI

Data Quality Report

Orbit 20200203_A07_011T01_9000003482_level2

Creation date: 2025-12-09T04:26:24.369753
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/AS1A07_011T01_9000003482cztM0_level2.fits modeM0/AS1A07_011T01_9000003482cztM0_level2_quad_clean.evt
Size (bytes)2,704,008,9602,474,046,720
Size2.5 GB 2.3 GB
Events in quadrant A16,748,71214,564,532
Events in quadrant B15,885,78614,602,636
Events in quadrant C16,081,74013,895,454
Events in quadrant D14,070,07012,764,053

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04430
B04440
C04450
D04450

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A056900
B056900
C056860
D056940

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05741760
B06122130
C05907860
D07059350

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A27887931391.125578%
B27883950691.817895%
C27889558602.101149%
D278810105403.780352%

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 361998 279075 0 0 0.00% 0.00%
B 361998 279007 0 0 0.00% 0.00%
C 361998 279005 0 0 0.00% 0.00%
D 361998 278849 0 0 0.00% 0.00%

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 29 16625 11.72 4361 4098 1068.6
A 7 110 13603 8.9 4361 4098 1068.6
A 0 30 12902 8.24 4361 4098 1068.6
B 2 9 12875 10.84 4212 4026 816.4
B 2 8 10875 8.39 4212 4026 816.4
B 14 254 10401 7.81 4212 4026 816.4
C 12 241 11135 6.7 4256 3985 1067.8
C 3 126 10822 6.4 4256 3985 1067.8
C 9 209 10805 6.39 4256 3985 1067.8
D 3 14 10338 6.28 4017 3662 1063.3
D 10 189 10155 6.11 4017 3662 1063.3
D 6 67 9840 5.81 4017 3662 1063.3

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