ASTROSAT CZTI

Data Quality Report

Orbit 32438

Creation date: 2024-06-27T20:40:10.976817
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/AS1A09_108T02_9000004706_32438cztM0_level2.evt modeM0/AS1A09_108T02_9000004706_32438cztM0_level2_quad_clean.evt
Size (bytes)237,214,08032,745,600
Size226.2 MB 31.2 MB
Events in quadrant A1,349,089211,763
Events in quadrant B2,243,494215,231
Events in quadrant C1,533,727204,519
Events in quadrant D1,903,470196,958

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0460
B0460
C0460
D0460

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0100
B0100
C0100
D0110

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A055561
B082351
C061731
D073201

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A2249200.889284%
B22491958.670520%
C22491044.624277%
D2249341.511783%

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 2249 2249 0 0 0.00% 0.00%
B 2249 2249 70 70 3.11% 3.11%
C 2249 2249 15 15 0.67% 0.67%
D 2249 2249 19 19 0.84% 0.84%

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 13 6 3627 47.7 349 344 68.8
A 13 254 3451 45.14 349 344 68.8
A 3 137 3058 39.43 349 344 68.8
B 6 159 511464 8050.53 339 331 63.5
B 4 80 405626 6383.54 339 331 63.5
B 12 111 7108 106.74 339 331 63.5
C 0 10 75083 964.54 332 335 77.5
C 14 238 62408 800.98 332 335 77.5
C 10 22 38477 492.18 332 335 77.5
D 8 195 505148 6263.29 339 333 80.6
D 1 47 76202 941.31 339 333 80.6
D 2 250 24622 301.36 339 333 80.6

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