ASTROSAT CZTI

Data Quality Report

Orbit 22735

Creation date: 2024-06-27T18:44:59.120222
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/AS1A08_007T01_9000003362_22735cztM0_level2.evt modeM0/AS1A08_007T01_9000003362_22735cztM0_level2_quad_clean.evt
Size (bytes)1,443,672,000276,802,560
Size1.3 GB 264.0 MB
Events in quadrant A9,347,7921,775,932
Events in quadrant B10,025,7681,799,526
Events in quadrant C9,550,2641,727,237
Events in quadrant D13,422,7831,679,953

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A04140
B04140
C04140
D04140

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A041467102
B043331201
C04146897
D054090218

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0240
B0250
C0250
D0250

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A20347660.324372%
B203461600.786395%
C203511530.751806%
D203369594.715775%

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 22623 20361 2 2 0.01% 0.01%
B 22623 20362 27 27 0.12% 0.13%
C 22623 20370 2 2 0.01% 0.01%
D 22623 20349 649 649 2.87% 3.19%

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 23 41690 81.41 2409 2352 483.2
A 13 254 34549 66.63 2409 2352 483.2
A 0 226 22848 42.42 2409 2352 483.2
B 12 18 225384 491.6 2405 2341 453.7
B 0 197 128138 277.27 2405 2341 453.7
B 0 228 78249 167.31 2405 2341 453.7
C 14 238 365381 668.95 2327 2341 542.7
C 10 22 62531 110.91 2327 2341 542.7
C 9 54 34183 58.67 2327 2341 542.7
D 1 52 1801319 3237.81 2312 2248 555.6
D 12 233 1548300 2782.45 2312 2248 555.6
D 12 227 839158 1506.2 2312 2248 555.6

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