ASTROSAT CZTI

Data Quality Report

Orbit 23994

Creation date: 2024-06-27T19:00:55.996118
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/AS1A07_165T01_9000003558_23994cztM0_level2.evt modeM0/AS1A07_165T01_9000003558_23994cztM0_level2_quad_clean.evt
Size (bytes)1,142,409,600239,448,960
Size1.1 GB 228.4 MB
Events in quadrant A5,932,1171,661,217
Events in quadrant B6,778,2111,683,745
Events in quadrant C6,228,0451,616,311
Events in quadrant D14,796,9621,407,795

Level1 data integrity


Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0240
C0240
D0240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0258803
B0282593
C0266025
D0527633

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02640
B02640
C02640
D02640

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A12764520.407396%
B127652421.895809%
C127642191.715763%
D12764266120.847697%

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 15239 12767 0 0 0.00% 0.00%
B 15240 12768 75 75 0.49% 0.59%
C 15239 12767 17 17 0.11% 0.13%
D 15239 12766 1929 1929 12.66% 15.11%

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 19972 59.95 1539 1508 308.0
A 3 137 13419 38.67 1539 1508 308.0
A 0 226 13295 38.27 1539 1508 308.0
B 0 197 696698 2424.77 1530 1491 286.7
B 12 111 34761 116.04 1530 1491 286.7
B 11 111 30586 101.48 1530 1491 286.7
C 14 238 235975 683.51 1481 1492 343.1
C 0 10 127867 368.38 1481 1492 343.1
C 3 233 39839 111.78 1481 1492 343.1
D 12 218 8295983 24985.56 1371 1330 332.0
D 8 195 434888 1305.98 1371 1330 332.0
D 1 52 238358 713.99 1371 1330 332.0

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