ASTROSAT CZTI

Data Quality Report

Orbit 24572

Creation date: 2024-06-27T19:07:25.313293
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_183T01_9000003610_24572cztM0_level2.evt modeM0/AS1T03_183T01_9000003610_24572cztM0_level2_quad_clean.evt
Size (bytes)812,715,840179,026,560
Size775.1 MB 170.7 MB
Events in quadrant A5,162,2011,189,917
Events in quadrant B5,354,2841,206,295
Events in quadrant C5,409,0631,146,776
Events in quadrant D7,935,1101,109,719

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0225851
B0229461
C0229151
D0311151

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02260
B02260
C02260
D02260

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0150
B0150
C0150
D0150

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A111181060.953409%
B111191351.214138%
C111191741.564889%
D111192732.455257%

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 12589 11119 1 1 0.01% 0.01%
B 12590 11120 7 7 0.06% 0.06%
C 12590 11119 9 9 0.07% 0.08%
D 12590 11120 187 187 1.49% 1.68%

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 17855 61.64 1337 1308 268.5
A 3 137 12057 40.04 1337 1308 268.5
A 0 226 11293 37.19 1337 1308 268.5
B 3 64 105389 411.08 1327 1289 253.2
B 12 111 30884 116.87 1327 1289 253.2
B 0 190 30156 113.99 1327 1289 253.2
C 14 238 201693 669.06 1281 1285 299.5
C 7 247 109262 360.48 1281 1285 299.5
C 2 16 75340 247.23 1281 1285 299.5
D 12 218 1182595 3785.99 1289 1249 312.0
D 8 195 1056836 3382.95 1289 1249 312.0
D 1 52 492335 1573.84 1289 1249 312.0

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