ASTROSAT CZTI

Data Quality Report

Orbit 28926

Creation date: 2024-06-27T19:58:02.477557
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_048T07_9000004148_28926cztM0_level2.evt modeM0/AS1A10_048T07_9000004148_28926cztM0_level2_quad_clean.evt
Size (bytes)775,463,04093,792,960
Size739.5 MB 89.4 MB
Events in quadrant A3,817,615589,641
Events in quadrant B3,928,090602,381
Events in quadrant C8,073,212555,016
Events in quadrant D7,139,294550,172

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0162973
B0164633
C0294963
D0264643

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A010
B020
C020
D020

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01600
B01600
C01600
D01600

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A77962292.937404%
B77962563.283735%
C779698212.596203%
D77967679.838379%

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 7962 7799 0 0 0.00% 0.00%
B 7962 7799 1 1 0.01% 0.01%
C 7962 7799 237 237 2.98% 3.04%
D 7962 7799 536 536 6.73% 6.87%

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 13 254 13638 63.3 980 957 200.3
A 15 174 13105 60.64 980 957 200.3
A 5 168 12668 58.46 980 957 200.3
B 5 255 77189 402.32 968 940 189.5
B 12 111 23676 119.96 968 940 189.5
B 11 111 21813 110.13 968 940 189.5
C 3 233 4300970 19950.4 909 913 215.5
C 14 238 157138 724.82 909 913 215.5
C 15 208 26881 120.48 909 913 215.5
D 8 195 3159428 13898.69 933 906 227.3
D 1 52 351574 1543.07 933 906 227.3
D 12 79 45961 198.26 933 906 227.3

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