ASTROSAT CZTI

Data Quality Report

Orbit 46644

Creation date: 2024-06-27T23:25:48.492644
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/AS1A13_092T16_9000006244_46644cztM0_level2.fits modeM0/AS1A13_092T16_9000006244_46644cztM0_level2_quad_clean.evt
Size (bytes)1,621,958,400363,191,040
Size1.5 GB 346.4 MB
Events in quadrant A21,449,0832,427,454
Events in quadrant B11,533,8492,460,154
Events in quadrant C10,276,4852,385,238
Events in quadrant D15,049,5522,180,433

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04560
B04560
C04560
D04560

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0786388
B0502484
C04758210
D0605294

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A224177903.524111%
B224183811.699527%
C224161050.468415%
D224199474.224096%

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 25108 22422 182 182 0.72% 0.81%
B 25108 22422 98 98 0.39% 0.44%
C 25109 22421 34 34 0.14% 0.15%
D 25109 22423 742 742 2.96% 3.31%

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 10 83 11389156 22588.43 2447 2397 504.1
A 15 235 280407 551.5 2447 2397 504.1
A 13 248 103240 200.05 2447 2397 504.1
B 0 189 530290 1116.24 2435 2361 473.0
B 5 32 273791 573.9 2435 2361 473.0
B 0 198 245535 514.16 2435 2361 473.0
C 14 254 201274 351.01 2405 2415 566.5
C 15 208 196495 342.57 2405 2415 566.5
C 9 54 144724 251.19 2405 2415 566.5
D 1 52 1650673 2718.97 2392 2323 606.2
D 12 233 1207118 1987.32 2392 2323 606.2
D 12 128 704892 1158.9 2392 2323 606.2

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