ASTROSAT CZTI

Data Quality Report

Orbit 29816

Creation date: 2024-06-27T20:07:59.218126
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/AS1T03_291T01_9000004278_29816cztM0_level2.evt modeM0/AS1T03_291T01_9000004278_29816cztM0_level2_quad_clean.evt
Size (bytes)2,005,513,920271,290,240
Size1.9 GB 258.7 MB
Events in quadrant A10,546,6021,780,629
Events in quadrant B18,652,0751,756,019
Events in quadrant C10,885,8371,691,959
Events in quadrant D19,204,8801,505,332

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04400
B04400
C04400
D04400

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0452444
B0701444
C0460944
D0712154

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0380
B0380
C0380
D0380

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A215162231.036438%
B215177293.388019%
C215174071.891528%
D21517266612.390203%

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 25416 21520 3 3 0.01% 0.01%
B 25417 21521 195 195 0.77% 0.91%
C 25417 21521 18 18 0.07% 0.08%
D 25417 21521 2432 2432 9.57% 11.30%

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 13 40888 71.07 2722 2672 537.8
A 13 254 40237 69.86 2722 2672 537.8
A 3 137 25888 43.17 2722 2672 537.8
B 6 159 6144433 12203.07 2659 2595 503.3
B 0 189 1308866 2595.4 2659 2595 503.3
B 15 33 334093 658.64 2659 2595 503.3
C 14 238 437596 733.33 2579 2594 593.2
C 10 22 137191 226.9 2579 2594 593.2
C 15 208 111814 184.12 2579 2594 593.2
D 7 238 6249451 10797.53 2467 2405 578.6
D 7 80 1456579 2513.43 2467 2405 578.6
D 8 195 1346301 2322.82 2467 2405 578.6

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