ASTROSAT CZTI

Data Quality Report

Orbit 30000

Creation date: 2024-06-27T20:09:43.502610
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/AS1A10_071T01_9000004310_30000cztM0_level2.evt modeM0/AS1A10_071T01_9000004310_30000cztM0_level2_quad_clean.evt
Size (bytes)1,069,041,600168,235,200
Size1019.5 MB 160.4 MB
Events in quadrant A6,074,4571,088,475
Events in quadrant B11,541,0701,053,370
Events in quadrant C6,397,8541,047,966
Events in quadrant D7,491,8331,013,623

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0266023
B0438455
C0271603
D0309393

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0140
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12897840.651314%
B128968676.723015%
C128961841.426799%
D128965023.892680%

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 14137 12900 2 2 0.01% 0.02%
B 14136 12899 454 454 3.21% 3.52%
C 14136 12899 0 0 0.00% 0.00%
D 14136 12898 324 324 2.29% 2.51%

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 8 192 38107 116.13 1563 1526 315.0
A 13 254 24172 71.89 1563 1526 315.0
A 3 137 16074 46.18 1563 1526 315.0
B 6 159 3561009 12163.16 1518 1478 292.6
B 6 36 1972368 6734.67 1518 1478 292.6
B 12 111 37630 123.53 1518 1478 292.6
C 3 233 251636 707.6 1498 1506 353.5
C 14 238 249394 701.26 1498 1506 353.5
C 2 114 30537 82.13 1498 1506 353.5
D 7 80 1370482 3623.18 1482 1446 377.9
D 8 195 355755 937.69 1482 1446 377.9
D 2 234 51883 133.48 1482 1446 377.9

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