ASTROSAT CZTI

Data Quality Report

Orbit 20971

Creation date: 2024-06-27T18:20:08.396909
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/AS1A05_013T01_9000003070_20971cztM0_level2.evt modeM0/AS1A05_013T01_9000003070_20971cztM0_level2_quad_clean.evt
Size (bytes)1,606,976,640282,916,800
Size1.5 GB 269.8 MB
Events in quadrant A9,600,3581,855,441
Events in quadrant B11,037,5511,800,487
Events in quadrant C9,605,1511,771,728
Events in quadrant D17,018,1251,706,892

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04240
B04240
C04240
D04240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0426233
B0465813
C0427033
D0643433

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0160

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A208221370.657958%
B208235022.410796%
C208222050.984536%
D2082219259.245029%

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 25454 20824 0 0 0.00% 0.00%
B 25455 20824 285 285 1.12% 1.37%
C 25454 20826 0 0 0.00% 0.00%
D 25454 20825 1644 1644 6.46% 7.89%

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 0 226 21724 38.56 2496 2447 499.9
A 3 137 20050 35.21 2496 2447 499.9
A 12 194 18050 31.21 2496 2447 499.9
B 3 64 396206 864.01 2444 2386 455.8
B 0 182 391954 854.68 2444 2386 455.8
B 7 220 289089 629.0 2444 2386 455.8
C 14 238 368729 670.31 2354 2368 546.6
C 7 247 51308 89.54 2354 2368 546.6
C 13 61 16876 26.54 2354 2368 546.6
D 1 20 3909694 6972.06 2319 2252 560.4
D 1 52 2464469 4393.34 2319 2252 560.4
D 12 227 1234351 2198.44 2319 2252 560.4

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