ASTROSAT CZTI

Data Quality Report

Orbit 39334

Creation date: 2024-06-27T22:03:21.919193
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/AS1A12_061T07_9000005468_39334cztM0_level2.fits modeM0/AS1A12_061T07_9000005468_39334cztM0_level2_quad_clean.evt
Size (bytes)274,340,16065,756,160
Size261.6 MB 62.7 MB
Events in quadrant A2,141,203440,468
Events in quadrant B1,817,980455,404
Events in quadrant C1,856,929439,246
Events in quadrant D4,036,729382,478

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160
B0160
C0160
D0170

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0780
B0780
C0780
D0780

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A087191
B080261
C079111
D0148091

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A3873571.471727%
B387370.180738%
C387330.077459%
D38733248.365608%

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 3873 3873 37 37 0.96% 0.96%
B 3873 3873 0 0 0.00% 0.00%
C 3873 3873 0 0 0.00% 0.00%
D 3873 3873 293 293 7.57% 7.57%

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 272290 3102.85 431 422 87.6
A 13 248 200311 2281.35 431 422 87.6
A 3 137 4737 49.25 431 422 87.6
B 5 255 115627 1366.49 428 416 84.3
B 12 111 10621 121.04 428 416 84.3
B 5 172 10536 120.03 428 416 84.3
C 15 214 174397 1780.0 418 422 97.7
C 9 187 25451 256.08 418 422 97.7
C 12 249 12774 126.38 418 422 97.7
D 12 235 1204965 11957.38 407 396 100.7
D 12 227 767322 7613.03 407 396 100.7
D 13 249 215643 2136.69 407 396 100.7

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