ASTROSAT CZTI

Data Quality Report

Orbit 34280

Creation date: 2022-01-30T08:20:30.183572
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/AS1T04_086T01_9000004890_34280cztM0_level2.evt modeM0/AS1T04_086T01_9000004890_34280cztM0_level2_quad_clean.evt
Size (bytes)563,068,80052,882,560
Size537.0 MB 50.4 MB
Events in quadrant A2,418,576333,774
Events in quadrant B3,946,994333,962
Events in quadrant C2,830,821347,316
Events in quadrant D7,501,570218,525

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0106073
B0151182
C0112952
D0257782

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01060
B01060
C01060
D01060

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0260
B0260
C0260
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A523960.114526%
B52394348.284024%
C5239160.305402%
D5239157930.139340%

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 7182 5240 1 1 0.01% 0.02%
B 7182 5240 279 279 3.88% 5.32%
C 7182 5240 11 11 0.15% 0.21%
D 7182 5240 1447 1447 20.15% 27.61%

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 25605 203.88 609 597 122.7
A 9 143 18390 145.06 609 597 122.7
A 13 6 13394 104.33 609 597 122.7
B 5 172 1229498 10874.42 594 579 113.0
B 0 229 124575 1097.21 594 579 113.0
B 0 182 63402 555.91 594 579 113.0
C 15 214 230428 1657.68 604 612 138.6
C 14 254 64723 462.44 604 612 138.6
C 0 10 62605 447.16 604 612 138.6
D 7 223 3818576 32146.61 491 480 118.8
D 8 195 764931 6436.32 491 480 118.8
D 12 235 390307 3282.16 491 480 118.8

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