ASTROSAT CZTI

Data Quality Report

Orbit 20160925_G05_214T01_9000000684_level2

Creation date: 2025-11-06T16:56:48.784947
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_214T01_9000000684cztM0_level2.fits modeM0/AS1G05_214T01_9000000684cztM0_level2_quad_clean.evt
Size (bytes)1,597,314,2401,420,329,600
Size1.5 GB 1.3 GB
Events in quadrant A9,708,9728,280,278
Events in quadrant B9,438,7868,305,941
Events in quadrant C9,631,5328,088,658
Events in quadrant D7,556,8626,314,181

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02730
B02730
C02730
D02730

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A035740
B035720
C035740
D035740

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A03688050
B03757840
C03788030
D07400430

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A17551528111.601573%
B17549331521.796083%
C17547320211.151744%
D1754823049817.379560%

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 203397 175563 0 0 0.00% 0.00%
B 203397 175548 0 0 0.00% 0.00%
C 203397 175534 0 0 0.00% 0.00%
D 203397 175465 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 14 188 9682 11.4 2519 2342 643.8
A 0 29 9649 11.35 2519 2342 643.8
A 14 204 8343 9.32 2519 2342 643.8
B 2 9 8184 11.76 2487 2355 495.6
B 12 226 6668 8.7 2487 2355 495.6
B 5 128 6513 8.39 2487 2355 495.6
C 1 80 7256 7.19 2541 2334 684.5
C 1 81 7077 6.93 2541 2334 684.5
C 12 241 6775 6.49 2541 2334 684.5
D 11 82 5722 6.5 2154 1951 580.0
D 3 14 5720 6.5 2154 1951 580.0
D 6 231 5504 6.13 2154 1951 580.0

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