ASTROSAT CZTI

Data Quality Report

Orbit 20240122_A13_074T07_9000006036_level2

Creation date: 2024-01-24T17:59:01.457931
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_074T07_9000006036cztM0_level2.fits modeM0/AS1A13_074T07_9000006036cztM0_level2_quad_clean.evt
Size (bytes)79,223,04086,754,240
Size75.6 MB 82.7 MB
Events in quadrant A481,796548,470
Events in quadrant B470,792552,082
Events in quadrant C492,100531,321
Events in quadrant D360,158401,239

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0250
B0250
C0250
D0250

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01720
B01720
C01720
D01720

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0277070
B0193880
C0179620
D0444620

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A85563634.242637%
B85562242.618046%
C8556670.783076%
D8556243628.471248%

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 10901 8556 0 0 0.00% 0.00%
B 10901 8555 0 0 0.00% 0.00%
C 10901 8556 0 0 0.00% 0.00%
D 10901 8532 0 0 0.00% 0.00%

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 29 422 9.05 125 118 33.6
A 15 236 412 8.75 125 118 33.6
A 7 110 409 8.66 125 118 33.6
B 2 9 428 11.06 124 118 28.0
B 2 8 352 8.34 124 118 28.0
B 5 232 315 7.03 124 118 28.0
C 3 158 379 7.31 130 121 35.3
C 3 202 374 7.17 130 121 35.3
C 1 81 363 6.85 130 121 35.3
D 8 176 362 8.93 103 93 30.1
D 8 160 279 6.17 103 93 30.1
D 15 63 277 6.11 103 93 30.1

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