ASTROSAT CZTI

Data Quality Report

Orbit 28746

Creation date: 2024-06-27T19:55:43.755049
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_123T08_9000004126_28746cztM0_level2.evt modeM0/AS1A10_123T08_9000004126_28746cztM0_level2_quad_clean.evt
Size (bytes)869,754,240161,006,400
Size829.5 MB 153.5 MB
Events in quadrant A5,427,3881,064,539
Events in quadrant B5,803,4141,082,678
Events in quadrant C5,738,8121,020,795
Events in quadrant D8,651,829971,701

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0226292
B0238032
C0234452
D0330872

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02140
B02140
C02140
D02140

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0270
B0270
C0270
D0270

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A106531181.107669%
B106521281.201652%
C106521091.023282%
D106535675.322444%

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 13248 10654 90 90 0.68% 0.84%
B 13247 10653 57 57 0.43% 0.54%
C 13247 10654 0 0 0.00% 0.00%
D 13248 10655 448 448 3.38% 4.20%

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 4 2 215229 805.58 1349 1326 265.5
A 13 254 23296 82.74 1349 1326 265.5
A 3 137 11967 40.08 1349 1326 265.5
B 5 255 359230 1463.64 1331 1301 244.5
B 10 245 144504 585.59 1331 1301 244.5
B 12 111 29272 114.38 1331 1301 244.5
C 3 233 542402 1858.6 1273 1284 291.1
C 14 238 220351 752.44 1273 1284 291.1
C 14 254 15297 48.13 1273 1284 291.1
D 1 52 2647056 9072.06 1262 1229 291.6
D 8 195 1019090 3490.06 1262 1229 291.6
D 12 233 171215 582.85 1262 1229 291.6

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