ASTROSAT CZTI

Data Quality Report

Orbit 20160220_T01_072T01_9000000338_level2

Creation date: 2025-10-27T20:39:23.834902
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/AS1T01_072T01_9000000338cztM0_level2.fits modeM0/AS1T01_072T01_9000000338cztM0_level2_quad_clean.evt
Size (bytes)852,943,680924,465,600
Size813.4 MB 881.6 MB
Events in quadrant A4,962,8885,444,085
Events in quadrant B4,961,9825,531,810
Events in quadrant C4,867,4945,342,085
Events in quadrant D4,267,1064,909,565

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A019760
B019760
C019760
D019760

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A1139986430990376139985869078574
B1139986430990376139985869078574
C1139986430990376139985869078574
D1139986430990376139985869078574

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A02029090
B02048070
C02178690
D02086590

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A988016200.627524%
B987977010.709536%
C9879713391.355304%
D988017130.721653%

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 114891 98786 0 0 0.00% 0.00%
B 114891 98783 0 0 0.00% 0.00%
C 114891 98785 0 0 0.00% 0.00%
D 114891 98785 0 0 0.00% 0.00%

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 29 4508 10.89 1287 1195 304.1
A 7 110 4484 10.81 1287 1195 304.1
A 9 19 3498 7.57 1287 1195 304.1
B 2 9 3936 11.15 1308 1237 242.1
B 10 225 3289 8.48 1308 1237 242.1
B 5 128 3220 8.19 1308 1237 242.1
C 12 241 3305 6.78 1283 1183 313.1
C 9 242 3122 6.19 1283 1183 313.1
C 3 187 3066 6.01 1283 1183 313.1
D 1 19 3129 6.95 1216 1110 290.6
D 3 14 2975 6.42 1216 1110 290.6
D 6 231 2970 6.4 1216 1110 290.6

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