ASTROSAT CZTI

Data Quality Report

Orbit 33745

Creation date: 2024-06-27T20:52:03.379877
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/AS1A11_086T01_9000004816_33745cztM0_level2.evt modeM0/AS1A11_086T01_9000004816_33745cztM0_level2_quad_clean.evt
Size (bytes)264,784,32056,468,160
Size252.5 MB 53.9 MB
Events in quadrant A1,337,071382,393
Events in quadrant B2,002,496373,643
Events in quadrant C1,710,756380,579
Events in quadrant D2,762,309358,214

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0210
C0210
D0210

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A061551
B080431
C069131
D0102951

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A302530.099174%
B30251695.586777%
C3025712.347107%
D30251123.702479%

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 5057 3026 1 1 0.02% 0.03%
B 5057 3026 137 137 2.71% 4.53%
C 5057 3026 63 63 1.25% 2.08%
D 5056 3025 119 119 2.35% 3.93%

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 4 41000 598.09 334 328 68.0
A 13 254 5545 76.72 334 328 68.0
A 10 83 4653 63.6 334 328 68.0
B 5 172 482848 7656.36 327 319 63.0
B 5 255 148824 2356.35 327 319 63.0
B 4 81 22513 352.16 327 319 63.0
C 9 187 132249 1722.25 325 329 76.6
C 15 214 130096 1694.14 325 329 76.6
C 0 10 110852 1442.91 325 329 76.6
D 8 195 991990 11324.06 316 311 87.6
D 13 249 217950 2485.24 316 311 87.6
D 1 47 101898 1160.03 316 311 87.6

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