ASTROSAT CZTI

Data Quality Report

Orbit 23498

Creation date: 2024-06-27T18:55:15.511299
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_100T02_9000003476_23498cztM0_level2.evt modeM0/AS1A07_100T02_9000003476_23498cztM0_level2_quad_clean.evt
Size (bytes)791,398,080120,191,040
Size754.7 MB 114.6 MB
Events in quadrant A4,530,931766,117
Events in quadrant B5,406,403766,633
Events in quadrant C5,955,583735,758
Events in quadrant D7,416,937697,418

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A022222
B022121
C022121
D022222

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A081
B070
C070
D092

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0222032178
B0245612284
C0265992481
D0319293258

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A97261291.326342%
B97112412.481722%
C97053623.730036%
D9682101410.473043%

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 18458 9860 0 0 0.00% 0.00%
B 18460 9842 29 29 0.16% 0.29%
C 18455 9867 166 166 0.90% 1.68%
D 18455 9829 947 947 5.13% 9.63%

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 18046 71.48 1167 1141 236.5
A 2 79 11817 45.14 1167 1141 236.5
A 3 1 10487 39.52 1167 1141 236.5
B 0 189 423959 1952.82 1151 1122 216.5
B 0 230 145919 668.73 1151 1122 216.5
B 15 32 91021 415.19 1151 1122 216.5
C 8 208 1287090 5020.61 1103 1109 256.1
C 14 238 171735 666.14 1103 1109 256.1
C 10 9 91393 352.48 1103 1109 256.1
D 1 52 2504200 9464.74 1089 1059 264.5
D 12 233 221532 833.64 1089 1059 264.5
D 15 0 216901 816.13 1089 1059 264.5

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